ASTROSAT CZTI

Data Quality Report

Orbit 20210325_A10_093T01_9000004274_level2

Creation date: 2021-03-30T11:28:04.763340
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_093T01_9000004274cztM0_level2_bc.evt modeM0/AS1A10_093T01_9000004274cztM0_level2_quad_clean.evt
Size (bytes)4,233,188,1601,183,481,280
Size3.9 GB 1.1 GB
Events in quadrant A18,695,6667,777,029
Events in quadrant B28,913,4777,862,777
Events in quadrant C23,765,4327,315,567
Events in quadrant D50,816,8956,828,882

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018040
B018060
C018040
D018020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01836970
B02170580
C02042890
D02931140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8845510221.155390%
B8839018912.139382%
C8838929513.338651%
D8839080129.064374%

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 101752 88568 10 10 0.01% 0.01%
B 101751 88486 60 60 0.06% 0.07%
C 101752 88480 21 21 0.02% 0.02%
D 101752 88484 2274 2274 2.23% 2.57%

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 0 13 331263 318.81 4661 4563 1024.7
A 12 16 283986 272.68 4661 4563 1024.7
A 13 254 168862 160.33 4661 4563 1024.7
B 6 159 7655847 8445.7 4716 4599 905.9
B 0 229 1999681 2202.24 4716 4599 905.9
B 10 245 402089 438.76 4716 4599 905.9
C 3 233 5091648 4796.17 4462 4445 1060.7
C 10 22 786781 737.58 4462 4445 1060.7
C 7 247 195406 180.04 4462 4445 1060.7
D 7 80 19396567 19199.16 4386 4239 1010.1
D 8 195 7033382 6959.13 4386 4239 1010.1
D 7 238 2775464 2743.62 4386 4239 1010.1

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