ASTROSAT CZTI

Data Quality Report

Orbit 57086

Creation date: 2026-04-17T05:16:18.777271
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_083T10_9000006566_57086cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57086cztM0_level2_quad_clean.evt
Size (bytes)562,046,40090,604,800
Size536.0 MB 86.4 MB
Events in quadrant A3,169,468637,502
Events in quadrant B3,838,336660,429
Events in quadrant C3,447,801603,700
Events in quadrant D9,840,701385,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142202
B0159402
C0150492
D0337432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546941.435991%
B65463615.514818%
C65461171.787351%
D6546233835.716468%

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 7626 6547 56 56 0.73% 0.86%
B 7626 6547 154 154 2.02% 2.35%
C 7626 6547 71 71 0.93% 1.08%
D 7626 6547 2382 2382 31.24% 36.38%

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 10 251 195950 1109.29 710 689 176.0
A 4 13 100261 565.67 710 689 176.0
A 3 14 64269 361.2 710 689 176.0
B 10 16 636497 4357.14 683 658 145.9
B 4 171 264534 1808.23 683 658 145.9
B 0 63 128039 872.89 683 658 145.9
C 14 245 218153 1173.17 685 678 185.4
C 6 223 210613 1132.49 685 678 185.4
C 12 252 149339 801.95 685 678 185.4
D 15 142 5105381 30682.23 583 556 166.4
D 12 33 1119213 6723.62 583 556 166.4
D 2 249 503642 3023.77 583 556 166.4

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