ASTROSAT CZTI

Data Quality Report

Orbit 58989

Creation date: 2026-08-23T05:31:06.229296
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_004T07_9000006598_58989cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58989cztM0_level2_quad_clean.evt
Size (bytes)823,069,44076,593,600
Size784.9 MB 73.0 MB
Events in quadrant A4,162,636636,472
Events in quadrant B3,766,025675,439
Events in quadrant C14,798,76348,529
Events in quadrant D7,227,519498,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171612
B0157512
C0483267
D0261122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65981332.015762%
B65981892.864504%
C6597613392.966500%
D6597109416.583295%

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 6599 52 52 0.68% 0.79%
B 7598 6599 118 118 1.55% 1.79%
C 7596 6596 5819 5819 76.61% 88.22%
D 7597 6598 1061 1061 13.97% 16.08%

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 731185 4152.05 714 696 175.9
A 14 238 377506 2141.76 714 696 175.9
A 15 233 196546 1113.2 714 696 175.9
B 6 255 438681 2876.34 710 683 152.3
B 4 236 240868 1577.3 710 683 152.3
B 10 247 77978 507.6 710 683 152.3
C 15 219 14136237 323846.47 153 151 43.7
C 12 252 12647 286.27 153 151 43.7
C 14 254 9028 203.36 153 151 43.7
D 12 110 3695191 19338.27 666 634 191.0
D 12 1 373986 1954.22 666 634 191.0
D 2 31 111938 582.59 666 634 191.0

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