ASTROSAT CZTI

Data Quality Report

Orbit 37077

Creation date: 2024-06-27T21:35:17.338198
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/AS1A09_138T04_9000005282_37077cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37077cztM0_level2_quad_clean.evt
Size (bytes)487,022,40087,842,880
Size464.5 MB 83.8 MB
Events in quadrant A3,366,240564,925
Events in quadrant B3,437,056568,025
Events in quadrant C3,397,184553,926
Events in quadrant D4,115,432527,339

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139663
B0144642
C0137862
D0164802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6390340.532081%
B6390741.158059%
C6390430.672926%
D63901452.269171%

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 9137 6392 18 18 0.20% 0.28%
B 9137 6392 36 36 0.39% 0.56%
C 9137 6392 30 30 0.33% 0.47%
D 9137 6391 128 128 1.40% 2.00%

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 10 83 290939 1927.82 747 734 150.5
A 9 143 91110 600.36 747 734 150.5
A 7 3 75139 494.27 747 734 150.5
B 5 200 180975 1261.55 739 718 142.9
B 0 190 94664 657.49 739 718 142.9
B 5 172 90554 628.73 739 718 142.9
C 15 214 269777 1580.8 725 730 170.2
C 1 23 115532 674.53 725 730 170.2
C 0 10 95790 558.53 725 730 170.2
D 2 249 325015 1833.93 723 703 176.8
D 2 153 317100 1789.18 723 703 176.8
D 1 52 212036 1195.05 723 703 176.8

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