ASTROSAT CZTI

Data Quality Report

Orbit 58546

Creation date: 2026-07-24T15:01:43.837608
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_58546cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58546cztM0_level2_quad_clean.evt
Size (bytes)606,084,480128,283,840
Size578.0 MB 122.3 MB
Events in quadrant A5,368,494831,382
Events in quadrant B4,879,053900,436
Events in quadrant C5,601,278798,349
Events in quadrant D5,901,760741,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216531
B0205281
C0226121
D0238331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88302402.718007%
B88312242.536519%
C88312582.921526%
D88313273.702865%

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 9235 8831 113 113 1.22% 1.28%
B 9236 8832 32 32 0.35% 0.36%
C 9236 8832 150 150 1.62% 1.70%
D 9236 8832 245 245 2.65% 2.77%

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 17 519386 2086.26 1003 974 248.5
A 3 14 469120 1883.97 1003 974 248.5
A 12 114 334380 1341.73 1003 974 248.5
B 0 171 234279 1074.39 1001 962 217.2
B 8 234 141193 645.75 1001 962 217.2
B 0 186 113367 517.61 1001 962 217.2
C 12 252 981506 3660.07 977 970 267.9
C 15 208 387752 1443.75 977 970 267.9
C 14 254 84492 311.76 977 970 267.9
D 3 12 607306 2221.61 964 923 272.9
D 8 240 483363 1767.52 964 923 272.9
D 2 31 365615 1336.12 964 923 272.9

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