ASTROSAT CZTI

Data Quality Report

Orbit 59077

Creation date: 2026-08-29T04:15:42.303694
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_004T02_9000006600_59077cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59077cztM0_level2_quad_clean.evt
Size (bytes)735,269,76079,557,120
Size701.2 MB 75.9 MB
Events in quadrant A3,168,643646,678
Events in quadrant B3,246,141690,263
Events in quadrant C3,012,636619,822
Events in quadrant D17,285,992798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138452
B0141562
C0136682
D0556542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473500.772439%
B6473771.189557%
C6473420.648849%
D6473646899.922756%

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 7558 6474 24 24 0.32% 0.37%
B 7558 6474 54 54 0.71% 0.83%
C 7558 6474 30 30 0.40% 0.46%
D 7557 6472 6377 6377 84.39% 98.53%

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 0 24 116084 652.63 715 696 176.8
A 13 248 90873 510.03 715 696 176.8
A 3 62 53793 300.31 715 696 176.8
B 4 171 225625 1487.12 711 684 151.3
B 4 236 46353 301.93 711 684 151.3
B 5 185 43618 283.84 711 684 151.3
C 6 223 89774 465.64 700 693 191.3
C 14 254 52798 272.36 700 693 191.3
C 12 252 37416 191.96 700 693 191.3
D 12 1 14347263 455192.89 103 98 31.5
D 2 62 2345762 74420.94 103 98 31.5
D 6 239 83374 2642.1 103 98 31.5

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