ASTROSAT CZTI

Data Quality Report

Orbit 38601

Creation date: 2024-06-27T21:53:57.734857
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_052T04_9000005388_38601cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38601cztM0_level2_quad_clean.evt
Size (bytes)668,640,960172,638,720
Size637.7 MB 164.6 MB
Events in quadrant A5,480,3531,176,734
Events in quadrant B6,841,1901,158,617
Events in quadrant C5,176,4681,137,014
Events in quadrant D6,432,5961,022,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227243
B0274022
C0219192
D0265942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10575270.255319%
B105754754.491726%
C10575220.208038%
D105753653.451537%

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 13559 10577 17 17 0.13% 0.16%
B 13559 10577 332 332 2.45% 3.14%
C 13559 10577 22 22 0.16% 0.21%
D 13559 10577 357 357 2.63% 3.38%

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 747877 3104.38 1185 1161 240.5
A 13 6 34830 139.97 1185 1161 240.5
A 12 189 34139 137.1 1185 1161 240.5
B 0 183 565751 2497.26 1166 1135 226.1
B 5 200 480262 2119.15 1166 1135 226.1
B 5 184 367883 1622.1 1166 1135 226.1
C 15 214 431026 1595.42 1155 1160 269.4
C 14 254 121698 447.37 1155 1160 269.4
C 15 159 57342 208.51 1155 1160 269.4
D 1 47 483874 1750.08 1137 1103 275.9
D 12 227 383643 1386.73 1137 1103 275.9
D 10 253 248780 897.84 1137 1103 275.9

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