ASTROSAT CZTI

Data Quality Report

Orbit 20220214_A05_103T05_9000004930_level2

Creation date: 2022-02-16T13:00:02.087185
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_103T05_9000004930cztM0_level2_bc.evt modeM0/AS1A05_103T05_9000004930cztM0_level2_quad_clean.evt
Size (bytes)2,741,719,680610,427,520
Size2.6 GB 582.1 MB
Events in quadrant A10,384,3803,984,577
Events in quadrant B17,554,4423,911,607
Events in quadrant C13,491,8883,952,061
Events in quadrant D38,379,5263,386,364

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01600
C01600
D01610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0974170
B01288110
C01041240
D02042030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09640
B09640
C09640
D09640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A474061070.225710%
B4740627365.771421%
C474062300.485171%
D47406991120.906636%

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 63356 47416 16 16 0.03% 0.03%
B 63356 47406 212 212 0.33% 0.45%
C 63356 47406 42 42 0.07% 0.09%
D 63356 47405 2816 2816 4.44% 5.94%

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 225594 408.09 2493 2458 546.8
A 9 143 212584 384.29 2493 2458 546.8
A 13 6 130456 234.09 2493 2458 546.8
B 5 172 4310943 8960.19 2435 2382 480.9
B 0 229 1124539 2333.66 2435 2382 480.9
B 0 190 742610 1539.4 2435 2382 480.9
C 15 214 1936215 3439.97 2448 2433 562.2
C 14 67 889973 1578.83 2448 2433 562.2
C 15 159 477981 845.94 2448 2433 562.2
D 8 195 6065833 10807.84 2169 2119 561.0
D 7 38 5305985 9453.5 2169 2119 561.0
D 7 80 4419158 7872.84 2169 2119 561.0

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