ASTROSAT CZTI

Data Quality Report

Orbit 24789

Creation date: 2024-06-27T19:09:55.227868
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_197T01_9000003626_24789cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24789cztM0_level2_quad_clean.evt
Size (bytes)1,458,305,280245,044,800
Size1.4 GB 233.7 MB
Events in quadrant A8,514,9611,585,156
Events in quadrant B16,289,9161,489,167
Events in quadrant C9,209,8001,550,650
Events in quadrant D8,903,8821,525,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376514
B0606934
C0390404
D0390454

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18447620.336098%
B18446282215.298710%
C184472581.398601%
D18447710.384886%

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 20437 18450 0 0 0.00% 0.00%
B 20436 18449 1799 1799 8.80% 9.75%
C 20437 18450 6 6 0.03% 0.03%
D 20437 18450 19 19 0.09% 0.10%

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 13 254 28793 60.34 2209 2164 441.3
A 3 137 21135 42.99 2209 2164 441.3
A 0 226 18561 37.16 2209 2164 441.3
B 3 64 8128442 21152.44 2020 1966 384.2
B 0 189 79558 201.96 2020 1966 384.2
B 12 111 48341 120.71 2020 1966 384.2
C 14 238 335170 673.59 2122 2133 494.4
C 5 112 281267 564.57 2122 2133 494.4
C 10 91 253232 507.86 2122 2133 494.4
D 1 52 443138 851.0 2146 2088 518.3
D 8 195 299721 574.28 2146 2088 518.3
D 2 234 77023 144.59 2146 2088 518.3

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