ASTROSAT CZTI

Data Quality Report

Orbit 38271

Creation date: 2024-06-27T21:50:34.326274
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/AS1A07_145T01_9000005370_38271cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38271cztM0_level2_quad_clean.evt
Size (bytes)402,151,68095,483,520
Size383.5 MB 91.1 MB
Events in quadrant A2,838,302650,153
Events in quadrant B2,570,042668,760
Events in quadrant C2,770,447631,230
Events in quadrant D6,284,842560,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118113
B0112522
C0114752
D0226832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5441170.312443%
B5441210.385958%
C5441440.808675%
D54413406.248851%

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 7263 5442 3 3 0.04% 0.06%
B 7263 5442 11 11 0.15% 0.20%
C 7263 5442 36 36 0.50% 0.66%
D 7263 5442 281 281 3.87% 5.16%

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 401805 3220.83 617 606 124.6
A 13 6 20798 162.1 617 606 124.6
A 12 189 17236 133.51 617 606 124.6
B 5 172 100486 846.97 616 602 117.9
B 12 111 14094 114.41 616 602 117.9
B 11 111 13000 105.13 616 602 117.9
C 15 214 228545 1624.6 605 609 140.3
C 2 16 74974 530.03 605 609 140.3
C 0 10 59282 418.19 605 609 140.3
D 10 203 3002947 20871.51 594 577 143.9
D 13 249 248182 1721.27 594 577 143.9
D 2 250 215074 1491.11 594 577 143.9

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