ASTROSAT CZTI

Data Quality Report

Orbit 52252

Creation date: 2025-07-21T15:38:40.835340
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/AS1C09_011T08_9000006472_52252cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52252cztM0_level2_quad_clean.evt
Size (bytes)737,948,16086,256,000
Size703.8 MB 82.3 MB
Events in quadrant A4,845,400607,607
Events in quadrant B7,454,143546,932
Events in quadrant C8,711,446464,124
Events in quadrant D5,795,030532,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189464
B0267161
C0304241
D0217901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65983024.577145%
B6598148422.491664%
C6598183227.765990%
D65995328.061828%

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 7543 6599 157 157 2.08% 2.38%
B 7543 6599 985 985 13.06% 14.93%
C 7543 6599 1453 1453 19.26% 22.02%
D 7544 6600 453 453 6.00% 6.86%

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 3 1216406 7147.77 683 667 170.1
A 12 194 147521 863.41 683 667 170.1
A 3 79 120969 707.3 683 667 170.1
B 12 32 2359293 17840.41 622 600 132.2
B 10 254 790099 5971.52 622 600 132.2
B 4 171 513423 3878.83 622 600 132.2
C 15 224 4496767 27225.12 592 582 165.1
C 15 231 457932 2769.33 592 582 165.1
C 15 189 226734 1369.39 592 582 165.1
D 6 42 1328139 7211.42 653 625 184.1
D 8 176 1013177 5500.46 653 625 184.1
D 12 1 230189 1247.05 653 625 184.1

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