ASTROSAT CZTI

Data Quality Report

Orbit 20211011_A10_057T03_9000004722_level2

Creation date: 2025-12-29T10:31:02.971559
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_057T03_9000004722cztM0_level2.fits modeM0/AS1A10_057T03_9000004722cztM0_level2_quad_clean.evt
Size (bytes)1,060,257,600772,047,360
Size1011.1 MB 736.3 MB
Events in quadrant A6,370,1304,107,655
Events in quadrant B6,065,5764,100,054
Events in quadrant C6,254,8324,059,387
Events in quadrant D5,343,3323,064,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03412340
B03757190
C03308040
D05928380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04750
B04730
C04710
D05390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023540
B023480
C023520
D026720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1134621157010.197247%
B1133731243010.963810%
C11334397308.584562%
D1289263669128.458961%

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 209260 113089 0 0 0.00% 0.00%
B 209199 113302 0 0 0.00% 0.00%
C 209106 113180 0 0 0.00% 0.00%
D 231112 127893 0 0 0.00% 0.00%

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 7 110 5377 9.53 1674 1585 397.8
A 9 19 5160 8.99 1674 1585 397.8
A 14 95 4494 7.31 1674 1585 397.8
B 2 9 5149 11.74 1626 1569 304.9
B 3 80 4758 10.46 1626 1569 304.9
B 5 128 4527 9.7 1626 1569 304.9
C 1 81 5638 9.89 1665 1574 410.9
C 3 202 5005 8.35 1665 1574 410.9
C 3 203 4978 8.29 1665 1574 410.9
D 6 67 4162 6.77 1545 1411 406.2
D 11 66 4136 6.71 1545 1411 406.2
D 4 160 4110 6.64 1545 1411 406.2

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