ASTROSAT CZTI

Data Quality Report

Orbit 20231127_A13_080T05_9000005952_level2

Creation date: 2023-11-28T10:34:51.961587
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/AS1A13_080T05_9000005952cztM0_level2.fits modeM0/AS1A13_080T05_9000005952cztM0_level2_quad_clean.evt
Size (bytes)243,506,880301,069,440
Size232.2 MB 287.1 MB
Events in quadrant A1,428,9181,877,493
Events in quadrant B1,391,5161,912,878
Events in quadrant C1,399,8141,777,668
Events in quadrant D1,207,0561,605,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760
B05760
C05760
D05760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0917460
B0736170
C0720170
D0856540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2828020997.422207%
B2828011784.165488%
C2828018826.654880%
D2828018356.488685%

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 33260 28276 0 0 0.00% 0.00%
B 33260 28276 0 0 0.00% 0.00%
C 33260 27951 0 0 0.00% 0.00%
D 33260 28268 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 1252 9.46 373 351 95.3
A 7 110 1172 8.62 373 351 95.3
A 0 30 1147 8.35 373 351 95.3
B 2 9 1268 11.93 372 355 76.5
B 3 17 1025 8.75 372 355 76.5
B 2 8 963 7.94 372 355 76.5
C 1 81 1116 8.03 370 346 95.8
C 3 202 1112 7.99 370 346 95.8
C 3 203 1092 7.78 370 346 95.8
D 6 38 919 6.09 348 316 99.0
D 10 189 915 6.05 348 316 99.0
D 6 79 901 5.91 348 316 99.0

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