ASTROSAT CZTI

Data Quality Report

Orbit 29253

Creation date: 2024-06-27T20:02:15.304975
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/AS1A10_115T01_9000004206_29253cztM0_level2.evt modeM0/AS1A10_115T01_9000004206_29253cztM0_level2_quad_clean.evt
Size (bytes)815,777,28092,977,920
Size778.0 MB 88.7 MB
Events in quadrant A3,298,328674,164
Events in quadrant B3,913,148678,650
Events in quadrant C10,832,918488,448
Events in quadrant D6,258,318555,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136131
B0157371
C0362961
D0227921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59741041.740877%
B59751813.029289%
C5975357159.765690%
D597599216.602510%

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 7219 5975 0 0 0.00% 0.00%
B 7220 5976 42 42 0.58% 0.70%
C 7220 5976 2851 2851 39.49% 47.71%
D 7220 5976 756 756 10.47% 12.65%

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 13 22174 126.37 849 836 168.9
A 13 254 11850 65.23 849 836 168.9
A 3 137 7660 40.41 849 836 168.9
B 0 183 293247 1862.8 831 814 157.0
B 10 245 234057 1485.76 831 814 157.0
B 0 229 52027 326.23 831 814 157.0
C 3 233 8077560 52584.31 671 678 153.6
C 14 238 115358 746.62 671 678 153.6
C 14 254 13493 83.43 671 678 153.6
D 1 52 2118513 11960.6 752 734 177.1
D 8 195 696624 3930.18 752 734 177.1
D 7 80 345025 1944.46 752 734 177.1

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