ASTROSAT CZTI

Data Quality Report

Orbit 20210521_A10_053T13_9000004394_level2

Creation date: 2025-12-26T00:12:10.999972
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_053T13_9000004394cztM0_level2.fits modeM0/AS1A10_053T13_9000004394cztM0_level2_quad_clean.evt
Size (bytes)368,887,680301,366,080
Size351.8 MB 287.4 MB
Events in quadrant A2,307,6721,726,862
Events in quadrant B2,135,6781,683,397
Events in quadrant C2,186,8181,631,063
Events in quadrant D1,982,2521,524,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0771700
B01149500
C0822610
D0857420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07620
C07620
D07620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A372502550.684564%
B372508442.265772%
C372509662.593289%
D372503350.899329%

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 42309 37249 0 0 0.00% 0.00%
B 42309 37236 0 0 0.00% 0.00%
C 42309 37249 0 0 0.00% 0.00%
D 42309 37249 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 2205 11.11 601 566 147.5
A 9 19 1772 8.18 601 566 147.5
A 7 110 1744 7.99 601 566 147.5
B 2 9 1788 10.89 565 539 114.7
B 2 8 1478 8.19 565 539 114.7
B 3 17 1461 8.04 565 539 114.7
C 12 241 1514 6.54 578 540 148.9
C 3 126 1500 6.45 578 540 148.9
C 7 111 1495 6.42 578 540 148.9
D 15 46 1457 6.28 565 517 149.6
D 7 3 1375 5.74 565 517 149.6
D 6 231 1370 5.7 565 517 149.6

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