ASTROSAT CZTI

Data Quality Report

Orbit 39614

Creation date: 2024-06-27T22:06:49.872141
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_018T01_9000005488_39614cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39614cztM0_level2_quad_clean.evt
Size (bytes)784,468,800170,026,560
Size748.1 MB 162.1 MB
Events in quadrant A6,710,8561,146,407
Events in quadrant B5,318,0531,187,903
Events in quadrant C10,342,4851,024,544
Events in quadrant D5,835,3891,045,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265554
B0236053
C0379163
D0248993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107372812.617118%
B107371571.462233%
C10737117210.915526%
D107371711.592624%

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 13539 10738 203 203 1.50% 1.89%
B 13540 10739 96 96 0.71% 0.89%
C 13540 10739 1042 1042 7.70% 9.70%
D 13540 10739 139 139 1.03% 1.29%

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 13 248 1252905 5308.13 1154 1131 235.8
A 10 83 807421 3419.06 1154 1131 235.8
A 0 8 75768 316.5 1154 1131 235.8
B 5 255 759859 3444.92 1148 1115 220.3
B 4 170 36232 159.44 1148 1115 220.3
B 12 111 28360 123.7 1148 1115 220.3
C 9 187 5324950 21184.01 1086 1093 251.3
C 15 214 454795 1805.31 1086 1093 251.3
C 15 208 300760 1192.4 1086 1093 251.3
D 2 249 747537 2708.66 1129 1097 275.6
D 12 227 165130 595.24 1129 1097 275.6
D 2 250 133145 479.17 1129 1097 275.6

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