ASTROSAT CZTI

Data Quality Report

Orbit 57733

Creation date: 2026-05-30T18:59:52.788044
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_083T16_9000006580_57733cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57733cztM0_level2_quad_clean.evt
Size (bytes)546,713,280103,256,640
Size521.4 MB 98.5 MB
Events in quadrant A3,848,541685,564
Events in quadrant B3,962,872728,211
Events in quadrant C7,832,051589,814
Events in quadrant D4,032,587618,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157740
B0167930
C0283200
D0166540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7236160.221117%
B72371171.616692%
C7237111615.420754%
D7236720.995025%

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 7236 7236 3 3 0.04% 0.04%
B 7237 7237 78 78 1.08% 1.08%
C 7237 7237 1051 1051 14.52% 14.52%
D 7236 7236 61 61 0.84% 0.84%

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 3 128 726904 3766.44 772 754 192.8
A 3 17 78430 402.89 772 754 192.8
A 7 29 22464 112.61 772 754 192.8
B 4 142 212178 1317.37 756 728 160.5
B 10 247 132706 822.25 756 728 160.5
B 0 171 130661 809.51 756 728 160.5
C 15 224 3164789 16330.17 708 700 193.8
C 12 254 811492 4184.57 708 700 193.8
C 12 2 787632 4061.43 708 700 193.8
D 3 224 344547 1631.07 748 715 210.8
D 9 49 237958 1125.44 748 715 210.8
D 2 249 122076 575.71 748 715 210.8

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