ASTROSAT CZTI

Data Quality Report

Orbit 36378

Creation date: 2022-06-21T01:07:59.580047
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_097T24_9000005196_36378cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36378cztM0_level2_quad_clean.evt
Size (bytes)485,429,76080,815,680
Size462.9 MB 77.1 MB
Events in quadrant A3,003,737561,213
Events in quadrant B3,346,247555,442
Events in quadrant C2,968,538552,323
Events in quadrant D5,052,822436,490

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119783
B0130422
C0116592
D0183752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48711212.484090%
B48711893.880107%
C4871941.929789%
D487195619.626360%

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 7024 4872 78 78 1.11% 1.60%
B 7024 4872 150 150 2.14% 3.08%
C 7024 4872 70 70 1.00% 1.44%
D 7024 4872 882 882 12.56% 18.10%

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 15 223 391294 3269.08 606 597 119.5
A 10 83 174674 1456.55 606 597 119.5
A 7 16 38685 318.69 606 597 119.5
B 5 172 535174 4705.8 598 586 113.6
B 5 255 319381 2806.25 598 586 113.6
B 4 171 88594 774.71 598 586 113.6
C 0 10 259522 1879.17 593 598 137.8
C 15 214 210707 1524.89 593 598 137.8
C 4 254 155144 1121.63 593 598 137.8
D 12 6 2219847 17686.32 518 506 125.5
D 2 250 250443 1991.79 518 506 125.5
D 7 223 134801 1070.22 518 506 125.5

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