ASTROSAT CZTI

Data Quality Report

Orbit 20210422_C05_019T01_9000004332_level2

Creation date: 2025-12-25T00:15:13.626469
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/AS1C05_019T01_9000004332cztM0_level2.fits modeM0/AS1C05_019T01_9000004332cztM0_level2_quad_clean.evt
Size (bytes)821,534,4001,074,032,640
Size783.5 MB 1.0 GB
Events in quadrant A5,101,8687,042,478
Events in quadrant B4,783,7166,947,978
Events in quadrant C4,862,1066,592,653
Events in quadrant D4,277,1506,093,217

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01766400
B02593820
C01800010
D02130100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017380
B017380
C017380
D017380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A854008881.039813%
B8540018932.216628%
C8540023232.720141%
D8540025522.988290%

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 97510 85399 0 0 0.00% 0.00%
B 97510 85398 0 0 0.00% 0.00%
C 97510 85396 0 0 0.00% 0.00%
D 97510 85378 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 4270 9.3 1329 1253 324.4
A 7 110 4049 8.62 1329 1253 324.4
A 9 19 3765 7.74 1329 1253 324.4
B 2 9 3897 10.91 1266 1213 246.1
B 2 8 3240 8.24 1266 1213 246.1
B 5 255 3176 7.98 1266 1213 246.1
C 1 81 3760 7.97 1284 1209 320.2
C 1 80 3742 7.91 1284 1209 320.2
C 12 241 3505 7.17 1284 1209 320.2
D 15 46 3265 6.57 1220 1107 328.6
D 3 14 3143 6.2 1220 1107 328.6
D 6 67 3092 6.04 1220 1107 328.6

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