ASTROSAT CZTI

Data Quality Report

Orbit 42948

Creation date: 2024-06-27T22:46:09.721613
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/AS1T05_143T01_9000005834_42948cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42948cztM0_level2_quad_clean.evt
Size (bytes)370,189,44097,963,200
Size353.0 MB 93.4 MB
Events in quadrant A3,583,391660,614
Events in quadrant B2,603,381688,068
Events in quadrant C2,788,941637,870
Events in quadrant D4,269,243568,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141342
B0118542
C0119382
D0167402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58851382.344945%
B588670.118926%
C588540.067969%
D58852944.995752%

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 9200 5886 101 101 1.10% 1.72%
B 9202 5886 2 2 0.02% 0.03%
C 9201 5885 1 1 0.01% 0.02%
D 9201 5885 278 278 3.02% 4.72%

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 620712 4608.67 653 640 134.5
A 15 237 396287 2940.64 653 640 134.5
A 15 222 19246 138.29 653 640 134.5
B 12 111 15627 117.51 653 635 127.6
B 15 85 15451 116.13 653 635 127.6
B 11 111 14774 110.83 653 635 127.6
C 15 214 244606 1630.88 634 637 149.6
C 0 207 43804 288.56 634 637 149.6
C 14 254 10119 63.39 634 637 149.6
D 1 47 553275 3621.66 625 607 152.6
D 1 52 461642 3021.18 625 607 152.6
D 13 249 222555 1454.44 625 607 152.6

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