ASTROSAT CZTI

Data Quality Report

Orbit 00282

Creation date: 2024-06-27T13:58:42.335212
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/AS1P01_126T01_9000000030_00282cztM0_level2.evt modeM0/AS1P01_126T01_9000000030_00282cztM0_level2_quad_clean.evt
Size (bytes)612,869,76030,222,720
Size584.5 MB 28.8 MB
Events in quadrant A4,816,861160,630
Events in quadrant B4,566,609163,500
Events in quadrant C4,297,050161,044
Events in quadrant D4,622,938157,090

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170190
B0163030
C0155370
D0165100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3857250.648172%
B385700.000000%
C385700.000000%
D38571213.137153%

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 3857 3857 158 158 4.10% 4.10%
B 3857 3857 49 49 1.27% 1.27%
C 3857 3857 23 23 0.60% 0.60%
D 3857 3857 190 190 4.93% 4.93%

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 66 181867 687.22 1179 1167 262.9
A 8 65 46312 171.69 1179 1167 262.9
A 12 150 19645 70.27 1179 1167 262.9
B 0 151 32402 111.32 1178 1184 280.4
B 8 54 12642 40.86 1178 1184 280.4
B 15 80 11864 38.08 1178 1184 280.4
C 0 219 4707 11.66 1089 1131 306.6
C 14 48 4422 10.73 1089 1131 306.6
C 3 159 3958 9.22 1089 1131 306.6
D 1 5 146566 419.95 1093 1109 346.4
D 13 216 59761 169.33 1093 1109 346.4
D 13 117 22876 62.84 1093 1109 346.4

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