ASTROSAT CZTI

Data Quality Report

Orbit 55332

Creation date: 2025-12-20T16:51:55.815705
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/AS1A14_009T01_9000006534_55332cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55332cztM0_level2_quad_clean.evt
Size (bytes)527,293,44094,659,840
Size502.9 MB 90.3 MB
Events in quadrant A3,882,212624,900
Events in quadrant B3,127,471688,006
Events in quadrant C7,990,142502,943
Events in quadrant D3,990,071575,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163603
B0145552
C0285062
D0168932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68081942.849589%
B6808370.543478%
C6808140620.652174%
D68081542.262045%

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 7683 6809 138 138 1.80% 2.03%
B 7683 6809 10 10 0.13% 0.15%
C 7683 6809 1307 1307 17.01% 19.20%
D 7683 6809 135 135 1.76% 1.98%

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 8 475673 2758.47 697 680 172.2
A 3 14 318899 1848.02 697 680 172.2
A 3 78 287774 1667.27 697 680 172.2
B 0 199 132861 882.72 702 677 149.7
B 10 247 62948 415.84 702 677 149.7
B 7 252 54557 359.81 702 677 149.7
C 9 38 5190504 29359.69 637 628 176.8
C 13 3 192943 1087.95 637 628 176.8
C 5 10 33624 186.66 637 628 176.8
D 7 70 362280 1863.49 686 658 194.1
D 2 62 184961 949.74 686 658 194.1
D 7 96 180354 926.0 686 658 194.1

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