ASTROSAT CZTI

Data Quality Report

Orbit 34583

Creation date: 2022-02-19T19:28:11.944571
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/AS1A05_176T03_9000004942_34583cztM0_level2.evt modeM0/AS1A05_176T03_9000004942_34583cztM0_level2_quad_clean.evt
Size (bytes)271,486,08018,210,240
Size258.9 MB 17.4 MB
Events in quadrant A1,250,48599,168
Events in quadrant B1,540,59098,308
Events in quadrant C1,616,88187,279
Events in quadrant D3,648,00391,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051261
B061241
C061611
D0125421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242920.082338%
B2429311.276245%
C24291315.393166%
D242956023.054755%

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 2429 2429 0 0 0.00% 0.00%
B 2429 2429 21 21 0.86% 0.86%
C 2429 2429 107 107 4.41% 4.41%
D 2429 2429 595 595 24.50% 24.50%

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 10 83 21325 326.47 315 308 64.4
A 9 143 6401 94.65 315 308 64.4
A 13 254 4223 60.81 315 308 64.4
B 5 172 104609 1737.27 309 302 60.0
B 0 190 82258 1365.01 309 302 60.0
B 0 189 69984 1160.58 309 302 60.0
C 0 207 269619 3916.24 295 298 68.8
C 15 214 101276 1468.34 295 298 68.8
C 0 10 85555 1239.74 295 298 68.8
D 8 195 1673917 23340.02 285 277 71.7
D 1 52 225641 3142.84 285 277 71.7
D 5 223 139579 1942.65 285 277 71.7

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