ASTROSAT CZTI

Data Quality Report

Orbit 52974

Creation date: 2025-07-15T09:55:28.864801
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/AS1A13_003T01_9000006486_52974cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52974cztM0_level2_quad_clean.evt
Size (bytes)833,011,20078,416,640
Size794.4 MB 74.8 MB
Events in quadrant A16,263,89866,968
Events in quadrant B3,021,168701,163
Events in quadrant C6,194,192571,915
Events in quadrant D4,834,827563,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0527680
B0140640
C0231260
D0191790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66976697100.000000%
B6711370.551334%
C670184612.624981%
D67114096.094472%

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 7794 6697 6522 6522 83.68% 97.39%
B 7794 6713 20 20 0.26% 0.30%
C 7794 6705 760 760 9.75% 11.33%
D 7794 6713 415 415 5.32% 6.18%

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 9 191 15832924 649468.08 88 86 24.4
A 0 8 31375 1283.48 88 86 24.4
A 4 249 14207 579.25 88 86 24.4
B 10 63 45806 296.28 701 677 152.3
B 0 143 31798 204.32 701 677 152.3
B 4 81 26759 171.23 701 677 152.3
C 12 254 2583519 14602.64 638 635 176.9
C 4 5 228654 1289.13 638 635 176.9
C 15 224 168879 951.19 638 635 176.9
D 8 176 661524 3504.18 654 622 188.6
D 1 0 299145 1582.8 654 622 188.6
D 12 2 187850 992.7 654 622 188.6

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