ASTROSAT CZTI

Data Quality Report

Orbit 42296

Creation date: 2024-06-27T22:38:47.247064
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/AS1A12_089T08_9000005790_42296cztM0_level2.fits modeM0/AS1A12_089T08_9000005790_42296cztM0_level2_quad_clean.evt
Size (bytes)319,331,52090,043,200
Size304.5 MB 85.9 MB
Events in quadrant A2,965,359600,343
Events in quadrant B2,563,227622,439
Events in quadrant C2,536,526594,008
Events in quadrant D3,335,466532,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119422
B0112322
C0109072
D0135062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5389230.426795%
B5389240.445352%
C538970.129894%
D53891412.616441%

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 7091 5390 8 8 0.11% 0.15%
B 7091 5390 9 9 0.13% 0.17%
C 7091 5390 1 1 0.01% 0.02%
D 7091 5390 113 113 1.59% 2.10%

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 560561 4528.57 603 590 123.7
A 13 248 29803 236.25 603 590 123.7
A 2 79 21735 171.0 603 590 123.7
B 4 171 54089 456.44 599 582 117.2
B 3 112 51114 431.06 599 582 117.2
B 0 245 25101 209.16 599 582 117.2
C 15 214 226990 1656.86 586 590 136.6
C 12 249 11366 78.86 586 590 136.6
C 15 159 7969 54.0 586 590 136.6
D 1 52 410617 2887.68 580 562 142.0
D 12 233 205225 1441.27 580 562 142.0
D 12 6 183974 1291.62 580 562 142.0

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