ASTROSAT CZTI

Data Quality Report

Orbit 57087

Creation date: 2026-04-17T08:18:43.268730
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_57087cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57087cztM0_level2_quad_clean.evt
Size (bytes)468,869,76094,864,320
Size447.1 MB 90.5 MB
Events in quadrant A2,917,300648,112
Events in quadrant B4,057,258659,292
Events in quadrant C4,657,828574,182
Events in quadrant D5,225,258543,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133132
B0163143
C0183142
D0198222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6413230.358646%
B64124106.394261%
C64125138.000624%
D64124376.815346%

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 7598 6414 9 9 0.12% 0.14%
B 7597 6413 208 208 2.74% 3.24%
C 7597 6413 385 385 5.07% 6.00%
D 7597 6413 391 391 5.15% 6.10%

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 57167 321.96 708 690 175.4
A 10 251 49113 276.05 708 690 175.4
A 8 9 15644 85.25 708 690 175.4
B 10 16 866510 5975.1 678 652 144.9
B 4 171 154932 1064.65 678 652 144.9
B 0 63 154446 1061.3 678 652 144.9
C 12 252 722653 4010.24 664 659 180.0
C 15 198 616400 3420.07 664 659 180.0
C 6 223 176595 977.22 664 659 180.0
D 15 142 1090742 5811.71 659 628 187.6
D 2 249 634502 3379.36 659 628 187.6
D 8 240 307412 1635.55 659 628 187.6

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