ASTROSAT CZTI

Data Quality Report

Orbit 20220222_T05_008T01_9000004956_level2

Creation date: 2026-01-01T08:13:59.995293
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_008T01_9000004956cztM0_level2.fits modeM0/AS1T05_008T01_9000004956cztM0_level2_quad_clean.evt
Size (bytes)1,548,025,9201,555,620,480
Size1.4 GB 1.4 GB
Events in quadrant A9,665,9849,570,186
Events in quadrant B8,892,8989,038,631
Events in quadrant C9,262,8849,178,057
Events in quadrant D7,776,7028,048,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033620
B033620
C033620
D033620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06090
B06090
C06090
D06090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03370160
B04293610
C03497470
D05864220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1646363570.216842%
B16462090775.513911%
C16462811630.706441%
D16461088875.398821%

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 223463 164656 0 0 0.00% 0.00%
B 223463 164565 0 0 0.00% 0.00%
C 223463 164627 0 0 0.00% 0.00%
D 223463 164518 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 9 19 7796 8.9 2524 2379 608.5
A 7 110 7770 8.86 2524 2379 608.5
A 0 29 7717 8.77 2524 2379 608.5
B 2 9 7899 12.4 2359 2259 454.7
B 3 80 6887 10.18 2359 2259 454.7
B 2 8 6192 8.65 2359 2259 454.7
C 1 81 7673 8.71 2452 2306 615.9
C 1 80 7474 8.39 2452 2306 615.9
C 3 203 7318 8.14 2452 2306 615.9
D 7 3 5757 6.36 2233 2040 584.5
D 10 189 5717 6.29 2233 2040 584.5
D 4 160 5707 6.27 2233 2040 584.5

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