ASTROSAT CZTI

Data Quality Report

Orbit 20221016_C07_001T12_9000005366_level2

Creation date: 2023-04-27T13:03:02.459497
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_001T12_9000005366cztM0_level2.fits modeM0/AS1C07_001T12_9000005366cztM0_level2_quad_clean.evt
Size (bytes)790,280,6401,190,430,720
Size753.7 MB 1.1 GB
Events in quadrant A4,748,2107,877,222
Events in quadrant B4,598,4147,890,521
Events in quadrant C4,692,1947,570,646
Events in quadrant D4,021,5146,847,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01918960
B01840750
C01785870
D02028960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03450
B03450
C03450
D03450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017520
B017520
C017520
D017520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A856803100.361811%
B856757740.903414%
C856801990.232260%
D8568115151.768187%

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 125624 85682 0 0 0.00% 0.00%
B 125624 85674 0 0 0.00% 0.00%
C 125624 85678 0 0 0.00% 0.00%
D 125624 85630 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 3997 9.15 1242 1173 308.4
A 9 19 3931 8.94 1242 1173 308.4
A 0 29 3836 8.63 1242 1173 308.4
B 2 9 3902 11.58 1219 1167 236.2
B 3 80 3569 10.17 1219 1167 236.2
B 5 255 3304 9.04 1219 1167 236.2
C 1 81 3994 8.91 1242 1173 316.6
C 1 80 3893 8.59 1242 1173 316.6
C 3 202 3729 8.07 1242 1173 316.6
D 7 3 3007 6.26 1155 1056 311.9
D 6 62 2926 6.0 1155 1056 311.9
D 10 113 2925 5.99 1155 1056 311.9

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