ASTROSAT CZTI

Data Quality Report

Orbit 37052

Creation date: 2024-06-27T21:34:38.510277
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/AS1A11_046T02_9000005274_37052cztM0_level2.evt modeM0/AS1A11_046T02_9000005274_37052cztM0_level2_quad_clean.evt
Size (bytes)743,002,56062,130,240
Size708.6 MB 59.3 MB
Events in quadrant A2,961,465394,186
Events in quadrant B3,229,531397,934
Events in quadrant C7,488,483372,754
Events in quadrant D8,436,778316,488

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121344
B01331910
C02602011
D02895610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5702110.192915%
B56971452.545199%
C5701176831.012103%
D5702239041.915118%

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 7316 5704 2 2 0.03% 0.04%
B 7316 5702 82 82 1.12% 1.44%
C 7316 5704 1659 1659 22.68% 29.08%
D 7316 5703 1918 1918 26.22% 33.63%

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 10 83 261427 1956.6 660 646 133.3
A 11 254 82211 611.97 660 646 133.3
A 7 3 49665 367.78 660 646 133.3
B 5 184 347755 2750.7 649 633 126.2
B 5 172 140236 1106.26 649 633 126.2
B 4 232 51267 401.24 649 633 126.2
C 10 20 4449156 34778.61 548 551 127.9
C 14 254 277031 2161.48 548 551 127.9
C 0 207 226279 1764.71 548 551 127.9
D 12 17 5168647 42604.43 487 473 121.3
D 1 52 606080 4992.39 487 473 121.3
D 6 112 153889 1264.7 487 473 121.3

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