ASTROSAT CZTI

Data Quality Report

Orbit 34681

Creation date: 2022-07-18T17:35:24.615198
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/AS1T04_078T01_9000004962_34681cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34681cztM0_level2_quad_clean.evt
Size (bytes)886,285,440109,126,080
Size845.2 MB 104.1 MB
Events in quadrant A5,044,601678,757
Events in quadrant B6,974,942672,274
Events in quadrant C4,974,483677,032
Events in quadrant D9,218,241629,574

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208803
B0265212
C0201322
D0338182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9323690.740105%
B93237508.044621%
C9323380.407594%
D93234624.955486%

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 13087 9325 45 45 0.34% 0.48%
B 13087 9325 565 565 4.32% 6.06%
C 13087 9325 26 26 0.20% 0.28%
D 13087 9325 319 319 2.44% 3.42%

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 15 169 404702 1796.5 1137 1116 224.7
A 15 174 92038 404.73 1137 1116 224.7
A 10 83 55446 241.84 1137 1116 224.7
B 5 172 1953872 9464.73 1093 1067 206.3
B 5 255 372720 1801.3 1093 1067 206.3
B 0 190 200465 966.43 1093 1067 206.3
C 15 214 389022 1543.68 1090 1098 251.3
C 0 10 120516 475.2 1090 1098 251.3
C 14 67 112477 443.21 1090 1098 251.3
D 8 195 3770968 14532.53 1078 1052 259.4
D 2 249 557051 2143.3 1078 1052 259.4
D 12 233 184461 707.02 1078 1052 259.4

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