ASTROSAT CZTI

Data Quality Report

Orbit 04721

Creation date: 2024-06-27T14:46:01.227276
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/AS1G05_227T01_9000000592_04721cztM0_level2.evt modeM0/AS1G05_227T01_9000000592_04721cztM0_level2_quad_clean.evt
Size (bytes)525,487,68074,329,920
Size501.1 MB 70.9 MB
Events in quadrant A3,161,956449,476
Events in quadrant B3,708,445453,471
Events in quadrant C2,980,615462,021
Events in quadrant D5,602,254411,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143623
B0157032
C0138462
D0212332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6794961.413011%
B6794821.206947%
C6794240.353253%
D679475611.127465%

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 7610 6796 38 38 0.50% 0.56%
B 7610 6796 20 20 0.26% 0.29%
C 7610 6796 0 0 0.00% 0.00%
D 7610 6796 540 540 7.10% 7.95%

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 0 118 156705 986.13 768 751 158.1
A 0 226 22498 137.51 768 751 158.1
A 15 254 16283 98.21 768 751 158.1
B 14 167 408502 2699.29 788 769 151.1
B 15 204 158329 1043.09 788 769 151.1
B 10 16 31055 200.5 788 769 151.1
C 9 247 13917 74.47 757 761 176.7
C 13 61 6320 31.47 757 761 176.7
C 8 128 5899 29.09 757 761 176.7
D 13 235 1677284 9691.51 707 683 173.0
D 2 63 739660 4271.62 707 683 173.0
D 2 136 171613 988.05 707 683 173.0

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