ASTROSAT CZTI

Data Quality Report

Orbit 52212

Creation date: 2025-06-20T12:48:24.942205
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/AS1C09_011T08_9000006472_52212cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52212cztM0_level2_quad_clean.evt
Size (bytes)1,184,702,40080,352,000
Size1.1 GB 76.6 MB
Events in quadrant A6,659,850656,095
Events in quadrant B10,382,056551,679
Events in quadrant C9,611,702496,473
Events in quadrant D16,612,462197,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250320
B0361180
C0338440
D0546230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A762179410.418580%
B7622236931.081081%
C7622233930.687484%
D7622569174.665442%

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 7621 7621 707 707 9.28% 9.28%
B 7622 7622 1856 1856 24.35% 24.35%
C 7622 7622 1588 1588 20.83% 20.83%
D 7621 7621 5241 5241 68.77% 68.77%

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 14 254 2736126 14090.17 772 750 194.1
A 12 3 323276 1661.36 772 750 194.1
A 4 249 92650 473.39 772 750 194.1
B 10 254 2494830 17187.63 692 670 145.1
B 12 32 2310402 15916.71 692 670 145.1
B 5 32 1818914 12529.79 692 670 145.1
C 15 224 4871572 28099.75 623 619 173.3
C 15 231 955126 5506.4 623 619 173.3
C 13 3 552985 3186.51 623 619 173.3
D 6 42 8410076 60187.08 480 458 139.7
D 11 176 2220357 15887.67 480 458 139.7
D 15 93 1970917 14102.45 480 458 139.7

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