ASTROSAT CZTI

Data Quality Report

Orbit 37540

Creation date: 2024-06-27T21:41:16.830088
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_113T02_9000005332_37540cztM0_level2.evt modeM0/AS1A10_113T02_9000005332_37540cztM0_level2_quad_clean.evt
Size (bytes)690,315,84083,986,560
Size658.3 MB 80.1 MB
Events in quadrant A5,706,697560,858
Events in quadrant B3,509,193563,809
Events in quadrant C3,176,193568,247
Events in quadrant D8,083,679404,730

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213323
B0144192
C0131672
D0282442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63781151.803073%
B63781532.398871%
C6378140.219505%
D6378175627.532142%

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 9245 6380 67 67 0.72% 1.05%
B 9245 6380 120 120 1.30% 1.88%
C 9245 6380 10 10 0.11% 0.16%
D 9245 6380 1800 1800 19.47% 28.21%

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 15 222 2486359 16811.86 728 714 147.9
A 10 83 341291 2303.52 728 714 147.9
A 12 189 20526 134.0 728 714 147.9
B 5 172 266346 1912.24 720 700 138.9
B 5 255 119043 851.89 720 700 138.9
B 5 184 103950 743.24 720 700 138.9
C 15 214 275174 1626.9 715 721 168.7
C 0 10 54426 318.35 715 721 168.7
C 14 254 18441 105.04 715 721 168.7
D 12 227 4619505 31075.21 603 588 148.6
D 12 233 353479 2374.18 603 588 148.6
D 10 199 176037 1180.39 603 588 148.6

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