ASTROSAT CZTI

Data Quality Report

Orbit 56388

Creation date: 2026-03-01T06:24:41.267047
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_083T05_9000006554_56388cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56388cztM0_level2_quad_clean.evt
Size (bytes)907,715,52076,337,280
Size865.7 MB 72.8 MB
Events in quadrant A8,434,186496,016
Events in quadrant B6,427,379586,549
Events in quadrant C3,347,885590,437
Events in quadrant D14,883,304178,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296225
B0236962
C0149312
D0487782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6573159124.205081%
B6574101615.454822%
C6574911.384241%
D6574461170.139945%

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 7608 6574 1650 1650 21.69% 25.10%
B 7609 6575 630 630 8.28% 9.58%
C 7609 6575 73 73 0.96% 1.11%
D 7609 6575 4266 4266 56.07% 64.88%

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 4 95 3226243 20146.17 641 628 160.1
A 3 79 1419881 8864.2 641 628 160.1
A 12 3 405791 2530.52 641 628 160.1
B 4 206 2313545 16453.22 651 626 140.6
B 5 172 1270049 9030.19 651 626 140.6
B 8 128 58826 414.01 651 626 140.6
C 15 230 281388 1519.49 671 664 184.7
C 12 254 254216 1372.42 671 664 184.7
C 12 249 87228 468.55 671 664 184.7
D 8 129 12357008 106892.16 402 384 115.6
D 5 32 460819 3983.04 402 384 115.6
D 8 240 181900 1570.22 402 384 115.6

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