ASTROSAT CZTI

Data Quality Report

Orbit 42319

Creation date: 2024-06-27T22:38:56.505376
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_102T01_9000005794_42319cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42319cztM0_level2_quad_clean.evt
Size (bytes)39,669,1208,976,960
Size37.8 MB 8.6 MB
Events in quadrant A518,23259,081
Events in quadrant B298,54158,306
Events in quadrant C252,54457,675
Events in quadrant D354,13251,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019141
B012671
C010721
D014311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53471.310861%
B534234.307116%
C53420.374532%
D534336.179775%

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 534 534 1 1 0.19% 0.19%
B 534 534 13 13 2.43% 2.43%
C 534 534 0 0 0.00% 0.00%
D 534 534 22 22 4.12% 4.12%

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 15 223 162617 12172.91 56 54 13.4
A 10 83 131522 9844.48 56 54 13.4
A 13 248 3073 226.07 56 54 13.4
B 3 112 41610 3194.91 55 54 13.0
B 15 35 20165 1546.17 55 54 13.0
B 4 81 7237 552.24 55 54 13.0
C 15 214 27825 1840.48 57 57 15.1
C 13 61 360 20.08 57 57 15.1
C 7 247 307 16.57 57 57 15.1
D 13 249 93672 6173.81 55 53 15.2
D 1 52 30520 2009.18 55 53 15.2
D 9 19 11062 726.0 55 53 15.2

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