ASTROSAT CZTI

Data Quality Report

Orbit 20220903_C07_001T11_9000005326_level2

Creation date: 2022-09-08T01:47:17.953987
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/AS1C07_001T11_9000005326cztM0_level2_bc.evt modeM0/AS1C07_001T11_9000005326cztM0_level2_quad_clean.evt
Size (bytes)3,443,382,7201,228,867,200
Size3.2 GB 1.1 GB
Events in quadrant A26,290,9448,131,211
Events in quadrant B21,618,2678,411,371
Events in quadrant C20,337,5418,341,975
Events in quadrant D31,429,8397,691,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01807520
B01676970
C01544310
D02085380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02630
B02630
C02630
D02630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013880
B013880
C013880
D013880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771934675.119686%
B6771826833.962019%
C6771915402.274103%
D6771764909.584004%

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 94157 67716 927 927 0.98% 1.37%
B 94157 67716 182 182 0.19% 0.27%
C 94157 67671 266 266 0.28% 0.39%
D 94157 67698 1547 1547 1.64% 2.29%

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 15 222 7880702 10764.69 3271 3228 731.8
A 10 83 2922234 3988.87 3271 3228 731.8
A 15 190 944755 1286.61 3271 3228 731.8
B 5 172 3899011 5778.01 3362 3293 674.2
B 15 35 1381209 2043.68 3362 3293 674.2
B 5 255 1084043 1602.94 3362 3293 674.2
C 15 214 2704449 3541.04 3289 3278 762.8
C 14 254 2484984 3253.34 3289 3278 762.8
C 0 10 677905 884.39 3289 3278 762.8
D 13 249 6205345 8117.72 3203 3116 764.0
D 12 227 5090916 6659.11 3203 3116 764.0
D 2 249 2284296 2985.7 3203 3116 764.0

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