ASTROSAT CZTI

Data Quality Report

Orbit 20230718_A12_088T59_9000005774_level2

Creation date: 2023-07-19T15:15:10.216135
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_088T59_9000005774cztM0_level2.fits modeM0/AS1A12_088T59_9000005774cztM0_level2_quad_clean.evt
Size (bytes)104,604,48083,983,680
Size99.8 MB 80.1 MB
Events in quadrant A641,868478,071
Events in quadrant B616,664473,435
Events in quadrant C622,236450,409
Events in quadrant D511,104364,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255190
B0241850
C0227270
D0381460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11214880.784733%
B11214360.321027%
C1121480.071339%
D1121410189.077938%

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 17192 11214 0 0 0.00% 0.00%
B 17192 11213 0 0 0.00% 0.00%
C 17192 11214 0 0 0.00% 0.00%
D 17192 11206 0 0 0.00% 0.00%

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 7 110 536 8.65 167 158 43.7
A 0 29 528 8.46 167 158 43.7
A 14 95 510 8.05 167 158 43.7
B 2 9 560 11.87 163 156 34.0
B 3 80 457 8.85 163 156 34.0
B 5 128 451 8.67 163 156 34.0
C 1 80 538 8.58 164 154 44.7
C 1 81 516 8.09 164 154 44.7
C 3 203 489 7.49 164 154 44.7
D 6 62 399 6.55 146 133 40.6
D 6 231 384 6.18 146 133 40.6
D 7 3 383 6.16 146 133 40.6

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