ASTROSAT CZTI

Data Quality Report

Orbit 36858

Creation date: 2024-06-27T21:32:28.449803
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_075T01_9000005244_36858cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36858cztM0_level2_quad_clean.evt
Size (bytes)308,292,48051,696,000
Size294.0 MB 49.3 MB
Events in quadrant A2,522,195393,475
Events in quadrant B831,6797,590
Events in quadrant C2,610,509407,976
Events in quadrant D2,999,422377,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01142
C01142
D01131

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011467457
B0560567
C011710473
D013706956

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536060.111940%
B54755475100.000000%
C5360280.522388%
D5304731.376320%

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 7237 5469 2 2 0.03% 0.04%
B 7258 5474 0 0 0.00% 0.00%
C 7214 5473 23 23 0.32% 0.42%
D 7256 5434 81 81 1.12% 1.49%

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 194592 1622.63 585 574 119.6
A 9 143 43669 360.42 585 574 119.6
A 13 6 12004 95.59 585 574 119.6
B 12 243 759761 176733.26 12 12 4.3
B 12 144 14097 3276.46 12 12 4.3
B 0 213 3321 769.74 12 12 4.3
C 15 214 229576 1717.1 571 575 133.4
C 14 254 55254 410.0 571 575 133.4
C 3 233 51447 381.45 571 575 133.4
D 12 227 235460 1719.08 561 545 136.7
D 12 17 140073 1021.05 561 545 136.7
D 13 249 94941 690.78 561 545 136.7

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