ASTROSAT CZTI

Data Quality Report

Orbit 35043

Creation date: 2022-03-22T21:36:29.047836
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_123T17_9000005018_35043cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35043cztM0_level2_quad_clean.evt
Size (bytes)477,282,24099,734,400
Size455.2 MB 95.1 MB
Events in quadrant A2,706,875684,415
Events in quadrant B3,024,057681,015
Events in quadrant C3,033,956676,604
Events in quadrant D5,334,154611,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113563
B0122782
C0121642
D0195462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524570.133460%
B52451282.440419%
C5245380.724500%
D524552510.009533%

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 7188 5246 0 0 0.00% 0.00%
B 7188 5246 88 88 1.22% 1.68%
C 7188 5246 28 28 0.39% 0.53%
D 7188 5246 486 486 6.76% 9.26%

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 75393 554.33 677 667 134.8
A 13 6 9221 63.46 677 667 134.8
A 13 254 7938 53.94 677 667 134.8
B 5 172 327220 2627.61 659 643 124.3
B 0 190 48217 382.78 659 643 124.3
B 3 112 20345 158.52 659 643 124.3
C 15 214 220237 1468.75 658 665 149.5
C 0 10 131765 876.95 658 665 149.5
C 14 67 74441 493.5 658 665 149.5
D 8 195 1013803 6581.74 636 618 153.9
D 13 249 729697 4736.16 636 618 153.9
D 12 217 339244 2199.74 636 618 153.9

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