ASTROSAT CZTI

Data Quality Report

Orbit 20181222_T03_051T01_9000002588_level2

Creation date: 2025-11-26T17:31:43.816494
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/AS1T03_051T01_9000002588cztM0_level2.fits modeM0/AS1T03_051T01_9000002588cztM0_level2_quad_clean.evt
Size (bytes)295,574,400169,920,000
Size281.9 MB 162.0 MB
Events in quadrant A1,877,982852,564
Events in quadrant B1,781,482853,094
Events in quadrant C1,832,424813,367
Events in quadrant D1,500,988667,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0597950
B0629020
C0600300
D01004430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05780
C05780
D05780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A284772800.983250%
B284774141.453805%
C284774121.446782%
D28477429815.092882%

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 34472 28470 0 0 0.00% 0.00%
B 34472 28474 0 0 0.00% 0.00%
C 34472 28474 0 0 0.00% 0.00%
D 34472 28473 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 1727 10.5 489 462 120.4
A 7 110 1510 8.7 489 462 120.4
A 9 19 1417 7.93 489 462 120.4
B 2 9 1484 10.96 471 450 94.3
B 2 8 1279 8.79 471 450 94.3
B 3 17 1213 8.09 471 450 94.3
C 3 126 1303 6.86 484 456 123.4
C 12 241 1210 6.1 484 456 123.4
C 9 233 1198 6.01 484 456 123.4
D 3 14 1101 6.36 428 392 111.4
D 6 67 1099 6.35 428 392 111.4
D 10 189 1076 6.14 428 392 111.4

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