ASTROSAT CZTI

Data Quality Report

Orbit 20220802_C07_015T02_9000005258_level2

Creation date: 2022-08-05T16:03:49.154971
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/AS1C07_015T02_9000005258cztM0_level2_bc.evt modeM0/AS1C07_015T02_9000005258cztM0_level2_quad_clean.evt
Size (bytes)361,843,200135,587,520
Size345.1 MB 129.3 MB
Events in quadrant A2,060,897885,889
Events in quadrant B2,133,516890,675
Events in quadrant C2,506,981888,156
Events in quadrant D3,643,342823,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183060
B0190340
C0193400
D0246800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01810
B01800
C01780
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8918120.134559%
B8915590.661806%
C8906660.741073%
D89153954.430735%

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 10483 8951 0 0 0.00% 0.00%
B 10482 8939 4 4 0.04% 0.04%
C 10482 8934 18 18 0.17% 0.20%
D 10482 8942 55 55 0.52% 0.62%

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 307321 3038.91 438 430 101.0
A 12 189 28436 277.32 438 430 101.0
A 13 6 20879 202.49 438 430 101.0
B 5 172 116043 1277.74 438 428 90.5
B 0 213 65293 716.87 438 428 90.5
B 0 190 52132 571.42 438 428 90.5
C 15 214 355642 3455.77 428 425 102.8
C 1 23 162664 1578.36 428 425 102.8
C 10 20 141660 1374.02 428 425 102.8
D 2 250 696304 6747.61 421 407 103.1
D 1 52 383456 3714.15 421 407 103.1
D 2 153 294209 2848.79 421 407 103.1

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