ASTROSAT CZTI

Data Quality Report

Orbit 46758

Creation date: 2024-06-27T23:27:15.919334
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/AS1A13_034T01_9000006264_46758cztM0_level2.fits modeM0/AS1A13_034T01_9000006264_46758cztM0_level2_quad_clean.evt
Size (bytes)11,998,0802,047,680
Size11.4 MB 2.0 MB
Events in quadrant A123,3793,577
Events in quadrant B105,37416,036
Events in quadrant C98,80112,501
Events in quadrant D97,8128,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035573115
B023391872
C023381891
D031532735

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02117
B02216
C02216
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13932.158273%
B22800.000000%
C21800.000000%
D18831.595745%

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 1182 214 0 0 0.00% 0.00%
B 1107 329 0 0 0.00% 0.00%
C 1182 329 0 0 0.00% 0.00%
D 1168 280 2 2 0.17% 0.71%

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 10 83 58605 11390.15 15 15 5.1
A 9 191 3923 759.73 15 15 5.1
A 13 254 340 63.18 15 15 5.1
B 3 112 1784 238.82 26 25 7.4
B 12 111 674 88.12 26 25 7.4
B 11 111 611 79.56 26 25 7.4
C 1 241 1335 171.72 24 24 7.6
C 13 61 182 20.69 24 24 7.6
C 3 233 177 20.04 24 24 7.6
D 5 171 4857 692.2 21 20 7.0
D 1 52 3831 545.38 21 20 7.0
D 9 49 2026 287.07 21 20 7.0

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