ASTROSAT CZTI

Data Quality Report

Orbit 59168

Creation date: 2026-09-04T07:39:36.837310
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/AS1T05_271T01_9000006604_59168cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59168cztM0_level2_quad_clean.evt
Size (bytes)1,515,974,400231,508,800
Size1.4 GB 220.8 MB
Events in quadrant A7,867,6401,700,329
Events in quadrant B8,751,3751,815,120
Events in quadrant C8,611,9381,630,526
Events in quadrant D29,599,765718,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350084
B0376334
C0374694
D0994524

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16597760.457914%
B165982651.596578%
C165982221.337511%
D16598937956.506808%

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 20232 16598 32 32 0.16% 0.19%
B 20233 16598 91 91 0.45% 0.55%
C 20233 16599 173 173 0.86% 1.04%
D 20233 16598 8218 8218 40.62% 49.51%

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 314218 690.96 1848 1803 452.1
A 15 233 305965 672.7 1848 1803 452.1
A 10 251 61187 131.34 1848 1803 452.1
B 4 171 835157 2153.94 1838 1766 386.9
B 5 248 213654 547.63 1838 1766 386.9
B 4 236 175225 448.31 1838 1766 386.9
C 5 250 725830 1450.74 1818 1805 499.1
C 12 252 227503 452.23 1818 1805 499.1
C 14 254 218243 433.68 1818 1805 499.1
D 12 1 16533056 53272.54 1104 1054 310.3
D 2 31 3740383 12049.57 1104 1054 310.3
D 11 129 3364658 10838.84 1104 1054 310.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct