ASTROSAT CZTI

Data Quality Report

Orbit 59298

Creation date: 2026-09-13T01:09:35.406677
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_021T06_9000006606_59298cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59298cztM0_level2_quad_clean.evt
Size (bytes)525,047,04095,820,480
Size500.7 MB 91.4 MB
Events in quadrant A3,037,473661,386
Events in quadrant B4,428,844673,167
Events in quadrant C3,352,820629,199
Events in quadrant D8,121,078492,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134062
B0174622
C0144042
D0285772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6377610.956563%
B63785618.795861%
C63771051.646542%
D6377124319.491924%

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 7582 6377 14 14 0.18% 0.22%
B 7583 6378 414 414 5.46% 6.49%
C 7582 6378 57 57 0.75% 0.89%
D 7581 6377 1237 1237 16.32% 19.40%

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 7 64 140655 807.7 702 685 173.3
A 3 14 59508 339.44 702 685 173.3
A 0 128 40862 231.84 702 685 173.3
B 4 236 885286 6210.9 676 652 142.4
B 5 236 392832 2753.44 676 652 142.4
B 6 255 201679 1411.38 676 652 142.4
C 12 252 239915 1265.21 692 685 189.1
C 4 5 169728 894.01 692 685 189.1
C 3 233 118243 621.73 692 685 189.1
D 11 129 4029641 21891.38 644 613 184.0
D 12 110 1377252 7479.85 644 613 184.0
D 12 2 130113 703.63 644 613 184.0

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