ASTROSAT CZTI

Data Quality Report

Orbit 50683

Creation date: 2025-02-10T05:06:02.366382
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/AS1T05_241T01_9000006446_50683cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50683cztM0_level2_quad_clean.evt
Size (bytes)527,477,76095,834,880
Size503.0 MB 91.4 MB
Events in quadrant A3,734,227642,439
Events in quadrant B4,160,721707,217
Events in quadrant C7,151,501498,686
Events in quadrant D3,956,535584,468

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154322
B0168972
C0258487
D0167132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67231442.141901%
B67231642.439387%
C6722164224.427254%
D67222173.228206%

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 7868 6723 48 48 0.61% 0.71%
B 7868 6724 58 58 0.74% 0.86%
C 7866 6721 1071 1071 13.62% 15.94%
D 7867 6722 137 137 1.74% 2.04%

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 4 3 230475 1281.51 714 695 179.3
A 10 253 125549 696.33 714 695 179.3
A 3 46 98999 548.25 714 695 179.3
B 4 170 491990 3238.75 717 694 151.7
B 0 229 233274 1533.23 717 694 151.7
B 2 249 108232 708.92 717 694 151.7
C 1 44 3127544 19256.5 583 580 162.4
C 13 113 558415 3435.26 583 580 162.4
C 13 3 395117 2429.64 583 580 162.4
D 2 249 349103 1797.85 695 670 193.8
D 1 47 149545 768.17 695 670 193.8
D 7 110 143225 735.56 695 670 193.8

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