ASTROSAT CZTI

Data Quality Report

Orbit 53773

Creation date: 2025-09-06T06:32:49.688388
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_022T04_9000006506_53773cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53773cztM0_level2_quad_clean.evt
Size (bytes)822,695,04080,824,320
Size784.6 MB 77.1 MB
Events in quadrant A16,134,896116,203
Events in quadrant B3,775,508687,692
Events in quadrant C5,802,991583,723
Events in quadrant D4,213,525586,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526139
B0160882
C0219322
D0173412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6789566183.384887%
B67891552.283105%
C67895808.543232%
D67891612.371483%

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 7863 6788 5682 5682 72.26% 83.71%
B 7864 6789 79 79 1.00% 1.16%
C 7864 6789 562 562 7.15% 8.28%
D 7864 6789 139 139 1.77% 2.05%

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 63 13999963 128747.52 427 415 108.7
A 4 249 274355 2519.3 427 415 108.7
A 5 241 64100 585.68 427 415 108.7
B 6 255 391251 2567.94 712 688 152.1
B 5 185 177124 1160.06 712 688 152.1
B 7 0 175186 1147.32 712 688 152.1
C 15 224 2601301 13751.21 683 677 189.1
C 15 208 90312 473.96 683 677 189.1
C 1 3 80248 420.74 683 677 189.1
D 1 241 666986 3422.46 691 660 194.7
D 3 224 169602 867.74 691 660 194.7
D 3 12 128113 654.64 691 660 194.7

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