ASTROSAT CZTI

Data Quality Report

Orbit 54140

Creation date: 2025-10-01T00:36:13.541062
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_012T01_9000006512_54140cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54140cztM0_level2_quad_clean.evt
Size (bytes)520,862,40088,660,800
Size496.7 MB 84.6 MB
Events in quadrant A3,368,896612,918
Events in quadrant B5,558,488554,802
Events in quadrant C3,099,892582,382
Events in quadrant D6,756,788488,042

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144011
B0209321
C0141541
D0244631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63921151.799124%
B6392113417.740926%
C63931031.611137%
D639388713.874550%

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 7367 6392 53 53 0.72% 0.83%
B 7367 6392 758 758 10.29% 11.86%
C 7368 6394 56 56 0.76% 0.88%
D 7368 6393 852 852 11.56% 13.33%

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 7 158 346681 2083.66 672 656 166.1
A 3 14 153530 920.56 672 656 166.1
A 15 174 90300 539.81 672 656 166.1
B 5 236 2556554 19854.72 606 584 128.7
B 14 167 111296 860.01 606 584 128.7
B 10 245 92462 713.71 606 584 128.7
C 13 3 227065 1261.48 658 651 179.5
C 9 38 172945 959.95 658 651 179.5
C 1 16 48254 265.22 658 651 179.5
D 8 176 2225859 12639.19 619 590 176.1
D 7 70 695321 3945.96 619 590 176.1
D 2 62 601407 3412.55 619 590 176.1

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