ASTROSAT CZTI

Data Quality Report

Orbit 54925

Creation date: 2025-11-22T21:07:47.616819
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_014T01_9000006528_54925cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54925cztM0_level2_quad_clean.evt
Size (bytes)561,864,96089,222,400
Size535.8 MB 85.1 MB
Events in quadrant A3,367,026607,917
Events in quadrant B2,884,060662,860
Events in quadrant C5,882,489543,902
Events in quadrant D8,153,231427,486

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146231
B0135971
C0219082
D0287537

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65862093.173398%
B65861372.080170%
C658675311.433343%
D6586169625.751594%

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 7407 6587 72 72 0.97% 1.09%
B 7407 6587 4 4 0.05% 0.06%
C 7408 6587 550 550 7.42% 8.35%
D 7406 6586 1489 1489 20.11% 22.61%

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 3 45 352346 1999.26 714 693 175.9
A 3 14 126416 714.78 714 693 175.9
A 4 78 36154 201.61 714 693 175.9
B 7 252 32667 211.65 704 678 151.1
B 12 111 18735 119.47 704 678 151.1
B 11 111 17458 111.02 704 678 151.1
C 4 5 2102048 11551.32 668 661 181.9
C 12 252 516042 2833.05 668 661 181.9
C 9 38 291673 1599.69 668 661 181.9
D 15 94 2630279 15095.93 613 584 174.2
D 3 224 768253 4406.85 613 584 174.2
D 6 239 569087 3263.53 613 584 174.2

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