ASTROSAT CZTI

Data Quality Report

Orbit 20210721_A10_094T31_9000004568_level2

Creation date: 2025-12-27T18:19:59.481143
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/AS1A10_094T31_9000004568cztM0_level2.fits modeM0/AS1A10_094T31_9000004568cztM0_level2_quad_clean.evt
Size (bytes)52,081,92058,187,520
Size49.7 MB 55.5 MB
Events in quadrant A318,756363,268
Events in quadrant B297,104349,549
Events in quadrant C311,146349,360
Events in quadrant D275,212324,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109720
B0164850
C0112160
D0131050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5362911.697128%
B53621653.077210%
C53621482.760164%
D53621162.163372%

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 6202 5361 0 0 0.00% 0.00%
B 6202 5362 0 0 0.00% 0.00%
C 6202 5361 0 0 0.00% 0.00%
D 6202 5360 0 0 0.00% 0.00%

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 0 29 317 10.76 83 78 22.2
A 14 95 267 8.51 83 78 22.2
A 7 110 245 7.52 83 78 22.2
B 2 9 234 9.12 78 75 17.4
B 5 255 204 7.4 78 75 17.4
B 5 225 203 7.34 78 75 17.4
C 1 81 249 7.64 82 77 22.5
C 3 203 246 7.5 82 77 22.5
C 1 80 234 6.97 82 77 22.5
D 3 14 213 6.22 78 71 22.8
D 7 3 210 6.09 78 71 22.8
D 7 5 209 6.04 78 71 22.8

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