ASTROSAT CZTI

Data Quality Report

Orbit 20161210_G06_136T02_9000000876_level2

Creation date: 2025-11-08T05:59:37.120705
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/AS1G06_136T02_9000000876cztM0_level2.fits modeM0/AS1G06_136T02_9000000876cztM0_level2_quad_clean.evt
Size (bytes)994,478,400965,436,480
Size948.4 MB 920.7 MB
Events in quadrant A5,953,3065,672,492
Events in quadrant B5,788,8545,688,446
Events in quadrant C5,899,7865,445,051
Events in quadrant D5,030,6124,988,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02296460
B02381610
C02245720
D02570120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01870
B01870
C01870
D01870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022080
B022080
C022080
D022080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10863314561.340293%
B10862819811.823655%
C1086308790.809169%
D10863020481.885299%

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 127192 108639 0 0 0.00% 0.00%
B 127192 108639 0 0 0.00% 0.00%
C 127192 108643 0 0 0.00% 0.00%
D 127192 108632 0 0 0.00% 0.00%

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 0 29 5763 11.0 1549 1445 392.6
A 7 110 5176 9.5 1549 1445 392.6
A 0 30 4549 7.91 1549 1445 392.6
B 2 9 5114 12.13 1525 1451 301.9
B 5 128 3973 8.35 1525 1451 301.9
B 14 254 3861 7.98 1525 1451 301.9
C 1 80 4286 6.91 1557 1440 411.8
C 1 81 4284 6.91 1557 1440 411.8
C 12 241 4124 6.52 1557 1440 411.8
D 3 14 3794 6.49 1436 1304 383.8
D 6 231 3706 6.26 1436 1304 383.8
D 11 82 3702 6.25 1436 1304 383.8

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