ASTROSAT CZTI

Data Quality Report

Orbit 35907

Creation date: 2022-06-09T00:19:29.644308
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/AS1A11_080T01_9000005146_35907cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35907cztM0_level2_quad_clean.evt
Size (bytes)896,676,480162,187,200
Size855.1 MB 154.7 MB
Events in quadrant A5,310,8781,079,809
Events in quadrant B6,512,8261,052,844
Events in quadrant C5,759,9331,055,616
Events in quadrant D8,849,397982,886

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225974
B0262903
C0233923
D0333113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10699210.196280%
B106993513.280680%
C106991851.729134%
D106997426.935228%

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 13534 10701 10 10 0.07% 0.09%
B 13534 10701 218 218 1.61% 2.04%
C 13534 10701 140 140 1.03% 1.31%
D 13534 10700 612 612 4.52% 5.72%

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 282316 1102.76 1254 1234 254.9
A 9 143 89612 346.73 1254 1234 254.9
A 15 169 36858 139.76 1254 1234 254.9
B 5 172 1116484 4736.93 1228 1200 235.4
B 5 255 152575 642.93 1228 1200 235.4
B 4 232 126346 531.53 1228 1200 235.4
C 15 214 447130 1582.11 1206 1217 281.8
C 9 69 353989 1251.65 1206 1217 281.8
C 0 10 218075 769.42 1206 1217 281.8
D 12 227 1298885 4480.3 1184 1153 289.7
D 8 195 835997 2882.22 1184 1153 289.7
D 10 118 622440 2144.94 1184 1153 289.7

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