ASTROSAT CZTI

Data Quality Report

Orbit 52096

Creation date: 2025-05-16T12:28:02.631874
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_011T07_9000006470_52096cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52096cztM0_level2_quad_clean.evt
Size (bytes)1,098,898,56082,238,400
Size1.0 GB 78.4 MB
Events in quadrant A5,985,100673,454
Events in quadrant B4,386,631738,272
Events in quadrant C12,062,058477,177
Events in quadrant D17,664,36975,034

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140223219832872140222092279854
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229880
B0183860
C0410900
D0575470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74834005.345450%
B74981562.080555%
C7492331644.260545%
D74807480100.000000%

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 7618 7497 453 453 5.95% 6.04%
B 7619 7510 113 113 1.48% 1.50%
C 7619 7502 3134 3134 41.13% 41.78%
D 7619 7495 5636 5636 73.97% 75.20%

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 12 3 1242046 6619.65 755 736 187.5
A 8 43 889435 4739.25 755 736 187.5
A 12 194 157329 835.08 755 736 187.5
B 10 254 521000 3166.4 766 739 164.3
B 5 172 121486 734.89 766 739 164.3
B 8 128 104390 630.84 766 739 164.3
C 5 80 5507512 36440.39 539 534 151.1
C 15 224 3823361 25296.14 539 534 151.1
C 13 3 146798 967.85 539 534 151.1
D 15 94 9447240 314824.81 99 94 30.0
D 6 42 3040430 101318.77 99 94 30.0
D 12 17 2659767 88633.23 99 94 30.0

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