ASTROSAT CZTI

Data Quality Report

Orbit 37797

Creation date: 2024-06-27T21:44:35.321260
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_103T06_9000005348_37797cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37797cztM0_level2_quad_clean.evt
Size (bytes)428,532,48072,172,800
Size408.7 MB 68.8 MB
Events in quadrant A2,618,427494,921
Events in quadrant B3,334,350475,796
Events in quadrant C2,234,172490,959
Events in quadrant D4,497,419418,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104522
B0128051
C091201
D0162311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4329230.531301%
B43292936.768307%
C4329100.231000%
D432973416.955417%

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 6481 4330 15 15 0.23% 0.35%
B 6480 4329 235 235 3.63% 5.43%
C 6481 4330 7 7 0.11% 0.16%
D 6481 4330 707 707 10.91% 16.33%

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 15 222 252920 2388.74 521 513 105.7
A 10 83 252235 2382.26 521 513 105.7
A 9 143 27314 253.64 521 513 105.7
B 5 172 563630 5840.92 500 489 96.4
B 0 229 215761 2232.81 500 489 96.4
B 4 81 144608 1494.81 500 489 96.4
C 15 214 192763 1683.77 496 501 114.2
C 0 10 65857 572.37 496 501 114.2
C 0 207 13815 116.6 496 501 114.2
D 13 249 1920863 16729.22 464 452 114.8
D 7 223 371752 3234.5 464 452 114.8
D 10 199 85714 742.74 464 452 114.8

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