ASTROSAT CZTI

Data Quality Report

Orbit 20230413_A12_095T02_9000005568_level2

Creation date: 2023-04-19T11:43:25.552276
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_095T02_9000005568cztM0_level2.fits modeM0/AS1A12_095T02_9000005568cztM0_level2_quad_clean.evt
Size (bytes)780,632,640767,856,960
Size744.5 MB 732.3 MB
Events in quadrant A4,703,0984,572,998
Events in quadrant B4,523,4924,584,904
Events in quadrant C4,606,1564,369,977
Events in quadrant D3,849,0323,769,196

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03410
B03410
C03410
D03410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017780
B017780
C017780
D017780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01918800
B01933910
C01938140
D02177910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A869014320.497117%
B8690113971.607576%
C8684913611.567088%
D8684351645.946363%

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 121354 86887 0 0 0.00% 0.00%
B 121354 86882 0 0 0.00% 0.00%
C 121354 86824 0 0 0.00% 0.00%
D 121354 86714 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 3878 8.8 1226 1150 309.9
A 7 110 3838 8.67 1226 1150 309.9
A 9 19 3810 8.58 1226 1150 309.9
B 2 9 3890 11.94 1195 1139 230.3
B 3 80 3329 9.51 1195 1139 230.3
B 3 17 3138 8.68 1195 1139 230.3
C 1 81 3737 8.24 1217 1135 315.9
C 3 202 3600 7.8 1217 1135 315.9
C 1 80 3561 7.68 1217 1135 315.9
D 10 189 2877 6.33 1097 994 297.4
D 7 3 2852 6.25 1097 994 297.4
D 6 67 2803 6.08 1097 994 297.4

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