ASTROSAT CZTI

Data Quality Report

Orbit 07985

Creation date: 2024-06-27T15:26:28.980745
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/AS1G06_168T20_9000001092_07985cztM0_level2.evt modeM0/AS1G06_168T20_9000001092_07985cztM0_level2_quad_clean.evt
Size (bytes)144,054,72011,407,680
Size137.4 MB 10.9 MB
Events in quadrant A1,101,15258,959
Events in quadrant B891,87161,712
Events in quadrant C1,055,11560,261
Events in quadrant D1,213,23955,382

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043412
B035801
C042301
D046611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1456412.815934%
B1456664.532967%
C1456473.228022%
D14561037.074176%

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 2571 1457 0 0 0.00% 0.00%
B 2571 1457 18 18 0.70% 1.24%
C 2571 1457 0 0 0.00% 0.00%
D 2571 1457 42 42 1.63% 2.88%

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 0 128 305852 6976.44 204 199 43.8
A 15 239 6376 140.99 204 199 43.8
A 0 226 1889 38.57 204 199 43.8
B 5 250 50945 1214.5 206 201 41.8
B 11 51 23189 550.19 206 201 41.8
B 4 239 14756 348.36 206 201 41.8
C 1 16 258576 5313.12 204 204 48.6
C 13 61 1429 25.19 204 204 48.6
C 7 159 560 7.32 204 204 48.6
D 1 52 427408 8452.61 201 195 50.5
D 13 169 22221 435.79 201 195 50.5
D 2 136 5058 96.21 201 195 50.5

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