ASTROSAT CZTI

Data Quality Report

Orbit 56735

Creation date: 2026-03-24T17:24:31.981127
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_083T05_9000006560_56735cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56735cztM0_level2_quad_clean.evt
Size (bytes)454,403,520100,013,760
Size433.4 MB 95.4 MB
Events in quadrant A3,615,548657,390
Events in quadrant B3,996,894705,105
Events in quadrant C5,236,729586,324
Events in quadrant D3,438,004601,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156222
B0165982
C0202902
D0147642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68592002.915877%
B68592283.324100%
C68596349.243330%
D6859711.035136%

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 7714 6859 130 130 1.69% 1.90%
B 7714 6859 102 102 1.32% 1.49%
C 7714 6859 515 515 6.68% 7.51%
D 7714 6859 11 11 0.14% 0.16%

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 62 393953 2116.86 754 735 185.8
A 10 251 188926 1013.11 754 735 185.8
A 4 249 64567 343.63 754 735 185.8
B 5 185 348399 2170.45 740 710 160.2
B 4 206 292368 1820.68 740 710 160.2
B 8 128 269746 1679.46 740 710 160.2
C 15 230 1998593 10244.63 704 697 195.0
C 6 223 131955 673.05 704 697 195.0
C 12 112 105285 536.3 704 697 195.0
D 5 113 159572 764.3 739 706 207.9
D 2 249 155678 745.57 739 706 207.9
D 5 173 54983 261.12 739 706 207.9

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