ASTROSAT CZTI

Data Quality Report

Orbit 23718

Creation date: 2024-06-27T18:57:53.755566
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/AS1A07_027T05_9000003506_23718cztM0_level2.evt modeM0/AS1A07_027T05_9000003506_23718cztM0_level2_quad_clean.evt
Size (bytes)1,344,792,960231,508,800
Size1.3 GB 220.8 MB
Events in quadrant A8,369,2401,485,577
Events in quadrant B9,482,8581,480,858
Events in quadrant C8,507,8021,455,190
Events in quadrant D13,160,3761,358,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365383
B0394423
C0368513
D0508973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178641470.822884%
B178632211.237194%
C178632341.309970%
D1786412346.907747%

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 19939 17864 0 0 0.00% 0.00%
B 19938 17863 47 47 0.24% 0.26%
C 19938 17864 2 2 0.01% 0.01%
D 19939 17865 1063 1063 5.33% 5.95%

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 13 254 32253 68.71 2167 2116 438.6
A 3 137 19039 38.58 2167 2116 438.6
A 0 226 18767 37.96 2167 2116 438.6
B 0 189 351962 845.54 2150 2098 413.8
B 0 229 279032 669.29 2150 2098 413.8
B 15 33 150858 359.52 2150 2098 413.8
C 14 238 324710 665.22 2073 2088 485.0
C 7 247 83090 167.02 2073 2088 485.0
C 13 61 14696 26.0 2073 2088 485.0
D 1 52 4091682 8160.3 2053 1993 501.2
D 12 233 488872 971.49 2053 1993 501.2
D 12 217 228736 452.43 2053 1993 501.2

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