ASTROSAT CZTI

Data Quality Report

Orbit 42736

Creation date: 2024-06-27T22:43:38.493783
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/AS1A05_013T01_9000005822_42736cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42736cztM0_level2_quad_clean.evt
Size (bytes)288,979,20087,649,920
Size275.6 MB 83.6 MB
Events in quadrant A2,750,856600,227
Events in quadrant B2,435,069610,639
Events in quadrant C2,522,873575,011
Events in quadrant D2,610,045527,460

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109172
B0103142
C0102332
D0110472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4850100.206186%
B4850470.969072%
C485090.185567%
D4850440.907216%

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 7003 4851 3 3 0.04% 0.06%
B 7003 4851 21 21 0.30% 0.43%
C 7003 4851 7 7 0.10% 0.14%
D 7003 4851 37 37 0.53% 0.76%

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 10 83 522033 4520.04 570 558 115.4
A 12 189 11293 93.05 570 558 115.4
A 13 6 8819 71.6 570 558 115.4
B 5 172 121255 1134.27 566 552 106.4
B 15 35 20555 187.97 566 552 106.4
B 15 32 19907 181.88 566 552 106.4
C 15 214 202211 1555.36 557 561 129.6
C 0 239 71664 548.43 557 561 129.6
C 14 254 40007 304.25 557 561 129.6
D 2 249 306310 2276.81 552 536 134.3
D 13 249 51741 381.28 552 536 134.3
D 5 70 44507 327.41 552 536 134.3

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