ASTROSAT CZTI

Data Quality Report

Orbit 59184

Creation date: 2026-09-07T11:00:08.642478
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/AS1T05_271T01_9000006604_59184cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59184cztM0_level2_quad_clean.evt
Size (bytes)1,855,661,760321,517,440
Size1.7 GB 306.6 MB
Events in quadrant A11,123,9632,230,831
Events in quadrant B12,249,8472,383,749
Events in quadrant C10,728,4372,173,468
Events in quadrant D32,872,6671,418,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0491585
B0519875
C0481305
D011323211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222112821.269641%
B222105862.638451%
C222101290.580819%
D22209631228.420910%

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 26411 22216 181 181 0.69% 0.81%
B 26410 22215 318 318 1.20% 1.43%
C 26410 22215 55 55 0.21% 0.25%
D 26410 22215 5933 5933 22.46% 26.71%

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 653306 1088.24 2456 2398 598.1
A 3 245 622078 1036.03 2456 2398 598.1
A 10 251 299919 497.42 2456 2398 598.1
B 4 236 1091165 2114.59 2430 2332 514.9
B 4 171 820939 1589.79 2430 2332 514.9
B 0 157 268778 517.46 2430 2332 514.9
C 3 233 497431 750.35 2417 2395 659.7
C 12 252 283819 426.57 2417 2395 659.7
C 14 254 265292 398.49 2417 2395 659.7
D 12 110 15312682 25311.75 2123 2030 604.9
D 2 31 4601428 7603.78 2123 2030 604.9
D 11 129 2231863 3686.39 2123 2030 604.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct