ASTROSAT CZTI

Data Quality Report

Orbit 24528

Creation date: 2024-06-27T19:06:56.426660
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/AS1T03_183T01_9000003606_24528cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24528cztM0_level2_quad_clean.evt
Size (bytes)867,767,040186,672,960
Size827.6 MB 178.0 MB
Events in quadrant A5,420,8471,248,288
Events in quadrant B7,304,5561,245,389
Events in quadrant C5,198,6791,215,674
Events in quadrant D7,599,4751,170,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229181
B0289561
C0227701
D0299311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111891060.947359%
B111896125.469658%
C111891431.278041%
D111893473.101260%

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 11760 11190 1 1 0.01% 0.01%
B 11759 11189 286 286 2.43% 2.56%
C 11759 11188 3 3 0.03% 0.03%
D 11760 11190 205 205 1.74% 1.83%

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 14 111 312533 1183.25 1313 1284 263.0
A 6 16 46160 170.6 1313 1284 263.0
A 13 254 17905 63.19 1313 1284 263.0
B 4 200 1268371 5140.76 1294 1259 246.5
B 3 64 903233 3659.37 1294 1259 246.5
B 12 111 30501 118.64 1294 1259 246.5
C 14 238 201724 685.88 1258 1264 292.3
C 2 16 84572 285.04 1258 1264 292.3
C 13 61 8794 25.76 1258 1264 292.3
D 1 52 2411805 7922.88 1262 1222 304.3
D 9 1 189891 620.1 1262 1222 304.3
D 12 218 110732 359.93 1262 1222 304.3

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