ASTROSAT CZTI

Data Quality Report

Orbit 32331

Creation date: 2024-06-27T20:38:57.264620
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/AS1A10_005T01_9000004700_32331cztM0_level2.evt modeM0/AS1A10_005T01_9000004700_32331cztM0_level2_quad_clean.evt
Size (bytes)1,185,840,000143,663,040
Size1.1 GB 137.0 MB
Events in quadrant A5,414,703951,117
Events in quadrant B10,132,734893,377
Events in quadrant C9,531,963853,620
Events in quadrant D10,066,195862,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234142
B0385091
C0356671
D0376431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113991521.333450%
B113998277.255022%
C11399157313.799456%
D113994734.149487%

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 11749 11400 5 5 0.04% 0.04%
B 11749 11400 441 441 3.75% 3.87%
C 11749 11400 913 913 7.77% 8.01%
D 11749 11400 313 313 2.66% 2.75%

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 12 189 95134 344.64 1353 1325 272.2
A 12 96 76072 274.61 1353 1325 272.2
A 13 6 24260 84.26 1353 1325 272.2
B 6 159 3147287 12642.3 1309 1275 248.8
B 5 172 1516839 6090.32 1309 1275 248.8
B 4 80 122315 486.4 1309 1275 248.8
C 0 10 4130269 14170.65 1243 1250 291.4
C 14 238 200650 684.33 1243 1250 291.4
C 15 208 200641 684.3 1243 1250 291.4
D 8 195 3930394 12713.74 1298 1264 309.0
D 7 38 329954 1063.56 1298 1264 309.0
D 12 233 306563 987.88 1298 1264 309.0

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