ASTROSAT CZTI

Data Quality Report

Orbit 58589

Creation date: 2026-07-27T11:07:42.715191
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_044T04_9000006592_58589cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58589cztM0_level2_quad_clean.evt
Size (bytes)670,265,280114,540,480
Size639.2 MB 109.2 MB
Events in quadrant A5,902,311762,105
Events in quadrant B8,868,484653,316
Events in quadrant C4,868,995757,253
Events in quadrant D4,524,253716,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233222
B0319672
C02027411
D0195692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83355656.778644%
B8335220526.454709%
C83322472.964474%
D83361381.655470%

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 9170 8337 358 358 3.90% 4.29%
B 9170 8338 1408 1408 15.35% 16.89%
C 9171 8336 134 134 1.46% 1.61%
D 9171 8339 61 61 0.67% 0.73%

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 1675616 7132.32 954 927 234.8
A 10 251 240351 1019.68 954 927 234.8
A 15 233 79887 336.28 954 927 234.8
B 5 172 3962920 21787.33 843 811 181.9
B 6 255 1109602 6097.16 843 811 181.9
B 0 171 92057 501.75 843 811 181.9
C 12 254 833830 3277.94 931 925 254.1
C 12 252 82048 319.26 931 925 254.1
C 14 245 77357 300.8 931 925 254.1
D 5 38 280677 1044.74 931 888 267.8
D 2 120 140830 522.55 931 888 267.8
D 2 249 122935 455.73 931 888 267.8

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