ASTROSAT CZTI

Data Quality Report

Orbit 52524

Creation date: 2025-06-14T05:08:20.019910
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_011T06_9000006478_52524cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52524cztM0_level2_quad_clean.evt
Size (bytes)625,184,64091,520,640
Size596.2 MB 87.3 MB
Events in quadrant A3,146,363647,903
Events in quadrant B4,261,258674,391
Events in quadrant C5,372,407583,630
Events in quadrant D9,857,720410,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142272
B0171012
C0205452
D0338802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506771.183523%
B65061792.751306%
C65064927.562250%
D6506221934.106978%

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 7596 6507 26 26 0.34% 0.40%
B 7596 6507 93 93 1.22% 1.43%
C 7596 6507 422 422 5.56% 6.49%
D 7596 6507 2056 2056 27.07% 31.60%

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 5 243 79149 445.45 694 676 176.2
A 11 3 63438 356.27 694 676 176.2
A 3 14 58889 330.45 694 676 176.2
B 10 254 516142 3578.35 684 661 144.1
B 4 81 345218 2391.84 684 661 144.1
B 12 32 135149 933.58 684 661 144.1
C 2 12 776961 4181.31 659 650 185.7
C 13 3 400518 2153.74 659 650 185.7
C 12 252 266089 1429.69 659 650 185.7
D 15 93 4743353 28901.74 559 533 164.1
D 6 42 853594 5198.37 559 533 164.1
D 8 176 353615 2151.61 559 533 164.1

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