ASTROSAT CZTI

Data Quality Report

Orbit 56026

Creation date: 2026-02-04T22:58:04.230857
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_066T02_9000006546_56026cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_56026cztM0_level2_quad_clean.evt
Size (bytes)733,668,48080,982,720
Size699.7 MB 77.2 MB
Events in quadrant A9,143,611465,417
Events in quadrant B3,314,844641,126
Events in quadrant C5,283,695485,787
Events in quadrant D8,931,458422,185

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315306
B0144021
C0205381
D0309181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260180828.881789%
B62611762.811053%
C6261100716.083693%
D6261175528.030666%

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 7365 6261 1627 1627 22.09% 25.99%
B 7366 6262 67 67 0.91% 1.07%
C 7366 6262 863 863 11.72% 13.78%
D 7366 6262 1635 1635 22.20% 26.11%

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 15 32 5268553 35793.68 591 576 147.2
A 12 115 1377330 9354.46 591 576 147.2
A 0 8 91588 618.39 591 576 147.2
B 5 185 383518 2718.9 662 639 140.8
B 4 171 128088 905.04 662 639 140.8
B 10 247 50643 355.09 662 639 140.8
C 13 3 2852711 17286.02 593 587 165.0
C 12 252 45719 273.53 593 587 165.0
C 12 249 31309 186.2 593 587 165.0
D 11 129 4004301 24220.61 579 554 165.3
D 6 239 1068772 6462.17 579 554 165.3
D 2 62 857073 5181.5 579 554 165.3

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