ASTROSAT CZTI

Data Quality Report

Orbit 35783

Creation date: 2022-05-13T15:52:00.634524
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/AS1A09_121T01_9000005136_35783cztM0_level2.evt modeM0/AS1A09_121T01_9000005136_35783cztM0_level2_quad_clean.evt
Size (bytes)426,159,36083,482,560
Size406.4 MB 79.6 MB
Events in quadrant A2,706,628561,014
Events in quadrant B3,562,943551,962
Events in quadrant C3,032,673535,182
Events in quadrant D3,254,868519,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111483
B0139912
C0118742
D0130252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5143100.194439%
B51431452.819366%
C51431382.683259%
D5143831.613844%

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 7236 5144 1 1 0.01% 0.02%
B 7236 5144 114 114 1.58% 2.22%
C 7236 5144 128 128 1.77% 2.49%
D 7236 5144 83 83 1.15% 1.61%

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 169436 1282.93 649 638 131.6
A 7 48 18280 134.09 649 638 131.6
A 15 169 8744 61.61 649 638 131.6
B 5 172 477704 3949.09 636 620 120.8
B 4 232 123339 1015.81 636 620 120.8
B 5 255 105190 865.58 636 620 120.8
C 0 10 277831 1945.86 619 623 142.5
C 15 214 222281 1555.93 619 623 142.5
C 0 207 95538 666.26 619 623 142.5
D 13 249 236759 1561.91 629 613 151.2
D 14 52 131677 866.88 629 613 151.2
D 8 195 104982 690.31 629 613 151.2

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