ASTROSAT CZTI

Data Quality Report

Orbit 20210104_A10_110T05_9000004098_level2

Creation date: 2022-09-13T16:33:15.634354
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_110T05_9000004098cztM0_level2_bc.evt modeM0/AS1A10_110T05_9000004098cztM0_level2_quad_clean.evt
Size (bytes)2,654,055,360941,279,040
Size2.5 GB 897.7 MB
Events in quadrant A12,939,2996,243,481
Events in quadrant B13,775,7256,336,588
Events in quadrant C13,329,2106,111,603
Events in quadrant D36,249,5385,704,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012200
B012200
C012200
D012200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253090
B01283070
C01276920
D02047220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599904940.823471%
B599908221.370228%
C5999011451.908651%
D59990694311.573596%

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 68720 59986 0 0 0.00% 0.00%
B 68720 59984 28 28 0.04% 0.05%
C 68720 59983 37 37 0.05% 0.06%
D 68720 59983 1634 1634 2.38% 2.72%

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 15 174 413919 595.62 3191 3143 689.7
A 13 254 95761 134.29 3191 3143 689.7
A 12 96 94426 132.36 3191 3143 689.7
B 10 245 642455 1055.52 3214 3140 605.7
B 0 230 408254 668.85 3214 3140 605.7
B 5 255 157537 254.91 3214 3140 605.7
C 4 254 728114 993.04 3091 3080 730.1
C 3 233 366630 497.94 3091 3080 730.1
C 7 247 206747 278.95 3091 3080 730.1
D 8 195 12143213 17192.81 3030 2936 706.1
D 1 52 10398501 14721.99 3030 2936 706.1
D 12 233 871061 1229.42 3030 2936 706.1

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