ASTROSAT CZTI

Data Quality Report

Orbit 28727

Creation date: 2024-06-27T19:55:29.322081
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/AS1A10_123T07_9000004124_28727cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28727cztM0_level2_quad_clean.evt
Size (bytes)759,064,320140,083,200
Size723.9 MB 133.6 MB
Events in quadrant A4,795,933895,554
Events in quadrant B4,842,918913,673
Events in quadrant C5,929,897876,443
Events in quadrant D6,730,543851,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211382
B0211482
C0245002
D0270752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10178720.707408%
B10178840.825309%
C101781751.719395%
D101782952.898408%

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 11778 10179 9 9 0.08% 0.09%
B 11778 10178 1 1 0.01% 0.01%
C 11778 10178 33 33 0.28% 0.32%
D 11778 10178 204 204 1.73% 2.00%

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 15 174 72339 290.26 1214 1188 245.1
A 13 254 17855 67.99 1214 1188 245.1
A 7 16 13831 51.58 1214 1188 245.1
B 4 80 71214 299.83 1209 1176 233.6
B 12 111 29054 119.35 1209 1176 233.6
B 11 111 25908 105.88 1209 1176 233.6
C 3 233 1181491 4327.48 1164 1170 272.8
C 14 238 193114 703.73 1164 1170 272.8
C 14 254 14740 49.75 1164 1170 272.8
D 8 195 1172905 4188.94 1164 1130 279.7
D 1 52 767030 2737.99 1164 1130 279.7
D 12 233 237368 844.52 1164 1130 279.7

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