ASTROSAT CZTI

Data Quality Report

Orbit 00858

Creation date: 2024-06-27T14:03:54.520859
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/AS1P01_165T02_9000000120_00858cztM0_level2.evt modeM0/AS1P01_165T02_9000000120_00858cztM0_level2_quad_clean.evt
Size (bytes)1,338,851,52095,402,880
Size1.2 GB 91.0 MB
Events in quadrant A9,899,250590,163
Events in quadrant B10,770,945580,723
Events in quadrant C9,644,927575,636
Events in quadrant D9,686,824569,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0352750
B0378260
C0344860
D0347140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8237120.145684%
B8238760.922554%
C823870.084972%
D82381712.075747%

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 8582 8239 396 396 4.61% 4.81%
B 8583 8239 627 627 7.31% 7.61%
C 8583 8240 349 349 4.07% 4.24%
D 8583 8240 641 641 7.47% 7.78%

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 0 214 82390 128.95 2557 2587 618.9
A 11 79 10795 13.26 2557 2587 618.9
A 3 111 8033 8.8 2557 2587 618.9
B 5 191 211210 326.75 2698 2716 638.1
B 0 220 197182 304.76 2698 2716 638.1
B 0 23 50321 74.6 2698 2716 638.1
C 3 111 41375 56.98 2434 2524 681.8
C 3 79 27906 37.23 2434 2524 681.8
C 15 241 24481 32.21 2434 2524 681.8
D 13 73 884320 1229.09 2315 2399 717.5
D 13 13 45667 60.3 2315 2399 717.5
D 1 4 35599 46.27 2315 2399 717.5

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