ASTROSAT CZTI

Data Quality Report

Orbit 57607

Creation date: 2026-05-22T09:45:18.014130
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/AS1A14_070T08_9000006576_57607cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57607cztM0_level2_quad_clean.evt
Size (bytes)1,925,294,400412,021,440
Size1.8 GB 392.9 MB
Events in quadrant A12,716,5212,754,722
Events in quadrant B13,891,7342,922,818
Events in quadrant C22,499,6532,436,113
Events in quadrant D19,895,0112,348,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0598614
B0627984
C0879724
D0801344

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05920
B05920
C05920
D05920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A292702470.843867%
B292715171.766253%
C2927026338.995559%
D2927018576.344380%

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 32388 29558 11 11 0.03% 0.04%
B 32389 29557 95 95 0.29% 0.32%
C 32388 29556 2114 2114 6.53% 7.15%
D 32388 29558 1690 1690 5.22% 5.72%

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 3 14 164319 210.22 3162 3087 767.0
A 3 128 153985 196.75 3162 3087 767.0
A 4 3 84380 105.99 3162 3087 767.0
B 10 247 487535 733.58 3117 2993 660.5
B 5 185 374263 562.09 3117 2993 660.5
B 7 252 138286 204.83 3117 2993 660.5
C 15 224 6893335 8650.33 2956 2922 796.5
C 9 38 2146140 2690.63 2956 2922 796.5
C 14 254 448178 558.98 2956 2922 796.5
D 15 142 3644514 4360.68 2984 2847 835.1
D 8 240 1448303 1730.85 2984 2847 835.1
D 15 94 1003750 1198.52 2984 2847 835.1

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