ASTROSAT CZTI

Data Quality Report

Orbit 19485

Creation date: 2024-06-27T18:03:20.877122
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/AS1A05_229T02_9000002890_19485cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19485cztM0_level2_quad_clean.evt
Size (bytes)569,033,28075,265,920
Size542.7 MB 71.8 MB
Events in quadrant A3,355,455463,318
Events in quadrant B3,654,386465,471
Events in quadrant C3,684,509447,897
Events in quadrant D6,082,250432,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140351
B0149661
C0151992
D0226501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6731841.247957%
B67311331.975932%
C67311281.901649%
D673176911.424751%

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 7656 6731 0 0 0.00% 0.00%
B 7655 6730 23 23 0.30% 0.34%
C 7656 6732 3 3 0.04% 0.04%
D 7656 6732 637 637 8.32% 9.46%

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 11 29 20279 111.37 863 845 174.5
A 5 16 8691 44.96 863 845 174.5
A 0 226 7390 37.51 863 845 174.5
B 3 112 186584 1144.99 852 834 162.2
B 7 220 36156 217.73 852 834 162.2
B 3 64 32549 195.5 852 834 162.2
C 9 221 215031 1118.5 820 826 191.5
C 3 233 140090 727.19 820 826 191.5
C 14 238 128758 668.02 820 826 191.5
D 1 52 1318161 6820.64 796 776 193.1
D 7 238 929378 4807.75 796 776 193.1
D 7 223 406171 2098.9 796 776 193.1

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