ASTROSAT CZTI

Data Quality Report

Orbit 20200203_A07_011T01_9000003482_level2

Creation date: 2021-09-01T15:42:34.647340
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_011T01_9000003482cztM0_level2_bc.evt modeM0/AS1A07_011T01_9000003482cztM0_level2_quad_clean.evt
Size (bytes)9,001,163,5203,509,311,680
Size8.4 GB 3.3 GB
Events in quadrant A52,351,70522,715,298
Events in quadrant B61,807,64822,998,300
Events in quadrant C54,332,48621,982,356
Events in quadrant D87,084,40621,474,494

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03990
B04000
C04000
D04010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050920
B050920
C050920
D050920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05147600
B05498490
C05289570
D06399180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25010527111.083945%
B25009644771.790113%
C25011451502.059061%
D25007796783.870008%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 353766 250183 56 56 0.02% 0.02%
B 353766 250165 213 213 0.06% 0.09%
C 353766 250179 217 217 0.06% 0.09%
D 353765 250145 1254 1254 0.35% 0.50%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 559944 188.69 13341 13129 2898.0
A 13 254 419270 140.15 13341 13129 2898.0
A 13 252 196027 63.11 13341 13129 2898.0
B 0 189 4241194 1668.99 13400 13085 2533.3
B 3 64 1774443 695.27 13400 13085 2533.3
B 0 229 972754 378.82 13400 13085 2533.3
C 10 9 2723934 903.12 12728 12676 3002.1
C 0 10 1334197 440.2 12728 12676 3002.1
C 7 247 562206 183.05 12728 12676 3002.1
D 1 52 17958708 5946.55 12910 12475 3017.9
D 9 85 8113933 2684.45 12910 12475 3017.9
D 12 233 4223459 1395.33 12910 12475 3017.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter