ASTROSAT CZTI

Data Quality Report

Orbit 20190304_A05_188T01_9000002756_level2

Creation date: 2025-11-28T11:14:30.480440
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/AS1A05_188T01_9000002756cztM0_level2.fits modeM0/AS1A05_188T01_9000002756cztM0_level2_quad_clean.evt
Size (bytes)887,978,880860,575,680
Size846.8 MB 820.7 MB
Events in quadrant A5,354,3825,115,942
Events in quadrant B5,287,7525,270,853
Events in quadrant C5,336,1364,965,639
Events in quadrant D4,474,0184,274,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019080
B019080
C019080
D019080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01330
C01330
D01330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02293820
B02038550
C01967250
D02704060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9390742124.485289%
B9390716861.795393%
C9390714891.585611%
D9390770657.523401%

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 106903 93811 0 0 0.00% 0.00%
B 106903 93885 0 0 0.00% 0.00%
C 106903 93895 0 0 0.00% 0.00%
D 106903 93830 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 0 29 4556 9.33 1397 1311 347.7
A 7 110 4436 8.99 1397 1311 347.7
A 9 19 4073 7.94 1397 1311 347.7
B 2 9 4400 11.07 1399 1335 276.9
B 2 8 3654 8.38 1399 1335 276.9
B 14 254 3542 7.97 1399 1335 276.9
C 1 80 4079 7.66 1408 1310 361.4
C 1 81 4017 7.49 1408 1310 361.4
C 12 241 3804 6.9 1408 1310 361.4
D 10 190 3313 6.4 1275 1161 336.1
D 3 14 3293 6.34 1275 1161 336.1
D 3 31 3210 6.1 1275 1161 336.1

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