ASTROSAT CZTI

Data Quality Report

Orbit 15626

Creation date: 2024-06-27T17:11:18.314935
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/AS1T02_086T01_9000002316_15626cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15626cztM0_level2_quad_clean.evt
Size (bytes)1,182,329,280255,179,520
Size1.1 GB 243.4 MB
Events in quadrant A8,478,3551,628,984
Events in quadrant B9,080,7051,644,338
Events in quadrant C8,490,2821,600,548
Events in quadrant D8,502,2571,576,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379455
B0390554
C0377944
D0384734

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18553600.323398%
B18553850.458147%
C185531140.614456%
D18553500.269498%

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 20464 18557 12 12 0.06% 0.06%
B 20464 18557 6 6 0.03% 0.03%
C 20464 18558 0 0 0.00% 0.00%
D 20464 18558 25 25 0.12% 0.13%

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 4 2 45675 99.53 2169 2122 437.6
A 3 80 30407 64.64 2169 2122 437.6
A 15 174 20563 42.14 2169 2122 437.6
B 5 65 150556 361.91 2172 2119 410.1
B 0 189 109073 260.77 2172 2119 410.1
B 0 197 83023 197.25 2172 2119 410.1
C 14 238 316219 644.71 2077 2085 487.2
C 3 233 69262 137.87 2077 2085 487.2
C 13 61 15085 26.68 2077 2085 487.2
D 1 52 163667 315.94 2103 2037 511.6
D 5 51 96344 184.34 2103 2037 511.6
D 2 234 76991 146.51 2103 2037 511.6

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