ASTROSAT CZTI

Data Quality Report

Orbit 57091

Creation date: 2026-04-17T18:03:45.238804
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_57091cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57091cztM0_level2_quad_clean.evt
Size (bytes)484,796,16097,243,200
Size462.3 MB 92.7 MB
Events in quadrant A4,700,870624,705
Events in quadrant B3,577,897682,410
Events in quadrant C4,573,241597,490
Events in quadrant D4,565,185565,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186812
B0154402
C0183652
D0182116

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68014075.984414%
B68012473.631819%
C68014496.601970%
D68003164.647059%

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 7371 6803 242 242 3.28% 3.56%
B 7371 6803 60 60 0.81% 0.88%
C 7371 6803 266 266 3.61% 3.91%
D 7370 6802 142 142 1.93% 2.09%

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 4 249 1643431 9100.45 737 717 180.5
A 4 13 92641 509.25 737 717 180.5
A 5 113 40479 220.28 737 717 180.5
B 10 16 375036 2406.3 725 697 155.6
B 4 171 141094 902.49 725 697 155.6
B 7 252 53200 337.5 725 697 155.6
C 15 198 604100 3088.08 718 709 195.4
C 14 245 289733 1479.19 718 709 195.4
C 2 12 166654 849.29 718 709 195.4
D 15 142 672885 3320.79 718 683 202.4
D 12 33 647561 3195.68 718 683 202.4
D 2 249 135067 663.88 718 683 202.4

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