ASTROSAT CZTI

Data Quality Report

Orbit 33636

Creation date: 2024-06-27T20:50:55.806770
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/AS1T04_076T01_9000004810_33636cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33636cztM0_level2_quad_clean.evt
Size (bytes)550,195,20050,388,480
Size524.7 MB 48.1 MB
Events in quadrant A2,646,321295,272
Events in quadrant B5,684,178286,614
Events in quadrant C3,747,511287,984
Events in quadrant D4,219,326277,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112332
B0204201
C0148461
D0164001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A539160.111297%
B5391122522.723057%
C53911683.116305%
D53912224.117974%

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 7124 5392 0 0 0.00% 0.00%
B 7124 5392 1090 1090 15.30% 20.22%
C 7124 5392 143 143 2.01% 2.65%
D 7124 5392 194 194 2.72% 3.60%

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 15 169 25394 183.73 670 655 134.6
A 13 6 18131 129.79 670 655 134.6
A 13 254 9182 63.33 670 655 134.6
B 5 172 3159965 28091.5 586 573 112.5
B 5 207 73531 648.7 586 573 112.5
B 5 255 29665 258.67 586 573 112.5
C 3 233 543503 3677.93 643 649 147.6
C 0 10 356936 2413.91 643 649 147.6
C 15 214 246867 1668.17 643 649 147.6
D 8 195 715656 4197.31 645 628 170.4
D 7 223 186357 1090.25 645 628 170.4
D 5 236 175514 1026.6 645 628 170.4

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