ASTROSAT CZTI

Data Quality Report

Orbit 13927

Creation date: 2024-06-27T16:48:01.974638
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_076T01_9000002056_13927cztM0_level2.evt modeM0/AS1G08_076T01_9000002056_13927cztM0_level2_quad_clean.evt
Size (bytes)507,853,440112,584,960
Size484.3 MB 107.4 MB
Events in quadrant A3,426,221706,461
Events in quadrant B3,630,239719,000
Events in quadrant C3,610,739753,309
Events in quadrant D4,205,652710,941

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154463
B0158222
C0156382
D0176092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7465300.401875%
B7465640.857334%
C7465350.468855%
D74651752.344273%

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 9146 7467 0 0 0.00% 0.00%
B 9146 7468 1 1 0.01% 0.01%
C 9146 7468 1 1 0.01% 0.01%
D 9146 7468 96 96 1.05% 1.29%

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 34135 186.91 877 857 178.0
A 1 162 11966 62.4 877 857 178.0
A 0 226 7666 38.24 877 857 178.0
B 10 245 88786 524.76 882 858 167.6
B 0 214 23471 134.96 882 858 167.6
B 12 111 20131 115.02 882 858 167.6
C 3 233 193286 950.85 876 881 202.4
C 13 61 6394 27.24 876 881 202.4
C 14 234 3589 13.38 876 881 202.4
D 13 189 379647 1886.73 851 832 200.8
D 8 195 166261 823.94 851 832 200.8
D 1 52 115414 570.69 851 832 200.8

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