ASTROSAT CZTI

Data Quality Report

Orbit 10881

Creation date: 2024-06-27T16:05:07.572303
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/AS1A04_055T01_9000001574_10881cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10881cztM0_level2_quad_clean.evt
Size (bytes)111,352,32021,412,800
Size106.2 MB 20.4 MB
Events in quadrant A897,394136,823
Events in quadrant B788,831142,904
Events in quadrant C711,452138,365
Events in quadrant D881,890130,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035432
B031191
C028631
D035201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1327382.863602%
B1327362.712886%
C132750.376790%
D1327282.110023%

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 1327 1327 10 10 0.75% 0.75%
B 1327 1327 5 5 0.38% 0.38%
C 1327 1327 0 0 0.00% 0.00%
D 1327 1327 10 10 0.75% 0.75%

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 8 5 157791 4136.42 182 178 38.1
A 15 223 25437 662.9 182 178 38.1
A 15 239 11538 298.13 182 178 38.1
B 4 239 82728 2316.24 181 176 35.6
B 12 111 3790 101.4 181 176 35.6
B 11 111 3222 85.46 181 176 35.6
C 14 234 2346 50.33 181 182 43.0
C 13 61 1314 26.33 181 182 43.0
C 12 4 840 15.3 181 182 43.0
D 1 52 128546 2941.03 178 173 43.6
D 8 195 39828 908.5 178 173 43.6
D 5 222 23869 542.88 178 173 43.6

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