ASTROSAT CZTI

Data Quality Report

Orbit 36122

Creation date: 2024-06-27T21:22:38.053154
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_069T01_9000005158_36122cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36122cztM0_level2_quad_clean.evt
Size (bytes)641,963,52088,600,320
Size612.2 MB 84.5 MB
Events in quadrant A3,207,963593,767
Events in quadrant B3,753,601592,839
Events in quadrant C4,046,717570,795
Events in quadrant D7,984,835462,677

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136593
B0153202
C0160122
D0281682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625140.211321%
B66251892.852830%
C66252243.381132%
D6625154523.320755%

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 9280 6627 1 1 0.01% 0.02%
B 9280 6627 121 121 1.30% 1.83%
C 9280 6627 180 180 1.94% 2.72%
D 9280 6627 1603 1603 17.27% 24.19%

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 193693 1227.45 768 751 157.2
A 9 143 30211 187.42 768 751 157.2
A 13 254 9984 58.74 768 751 157.2
B 5 172 643998 4397.95 754 733 146.3
B 0 155 43479 292.25 754 733 146.3
B 0 190 30794 205.52 754 733 146.3
C 0 207 571944 3330.62 732 736 171.5
C 15 214 276820 1609.8 732 736 171.5
C 0 10 251346 1461.27 732 736 171.5
D 10 203 2268669 13668.36 671 651 165.9
D 1 52 1774697 10691.4 671 651 165.9
D 12 6 301040 1810.31 671 651 165.9

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