ASTROSAT CZTI

Data Quality Report

Orbit 14171

Creation date: 2024-06-27T16:51:37.581538
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/AS1G08_024T02_9000002094_14171cztM0_level2.evt modeM0/AS1G08_024T02_9000002094_14171cztM0_level2_quad_clean.evt
Size (bytes)480,211,20080,899,200
Size458.0 MB 77.2 MB
Events in quadrant A3,354,272492,693
Events in quadrant B3,447,233498,628
Events in quadrant C3,448,754520,149
Events in quadrant D3,862,806495,969

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137813
B0140742
C0137262
D0157672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63411141.797824%
B63411522.397098%
C6341941.482416%
D63411071.687431%

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 7602 6344 0 0 0.00% 0.00%
B 7602 6344 7 7 0.09% 0.11%
C 7602 6344 0 0 0.00% 0.00%
D 7602 6344 1 1 0.01% 0.02%

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 8 15 17574 97.15 864 847 172.2
A 12 189 15919 87.54 864 847 172.2
A 0 226 7672 39.64 864 847 172.2
B 10 244 70004 427.49 855 836 161.8
B 12 111 19381 114.62 855 836 161.8
B 0 189 16587 97.35 855 836 161.8
C 3 233 147076 752.78 847 854 194.2
C 13 61 5953 26.25 847 854 194.2
C 14 234 1985 5.82 847 854 194.2
D 8 195 459269 2309.88 843 826 198.5
D 1 52 85849 428.39 843 826 198.5
D 10 157 58671 291.45 843 826 198.5

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