ASTROSAT CZTI

Data Quality Report

Orbit 07737

Creation date: 2024-06-27T15:23:19.560682
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/AS1G06_064T01_9000001066_07737cztM0_level2.evt modeM0/AS1G06_064T01_9000001066_07737cztM0_level2_quad_clean.evt
Size (bytes)1,218,444,480240,373,440
Size1.1 GB 229.2 MB
Events in quadrant A8,812,5641,522,837
Events in quadrant B9,204,3801,535,113
Events in quadrant C8,697,3931,491,730
Events in quadrant D8,908,6911,430,186

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391625
B0400614
C0389934
D0399327

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188772111.117762%
B188772841.504476%
C188771300.688669%
D188761931.022462%

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 20769 18879 1 1 0.00% 0.01%
B 20769 18880 20 20 0.10% 0.11%
C 20769 18881 6 6 0.03% 0.03%
D 20768 18880 56 56 0.27% 0.30%

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 23 204766 444.12 2215 2164 456.2
A 0 226 35295 72.63 2215 2164 456.2
A 3 1 25754 51.71 2215 2164 456.2
B 0 229 186972 432.98 2229 2175 426.8
B 4 239 79121 180.28 2229 2175 426.8
B 10 252 75684 172.23 2229 2175 426.8
C 9 68 301447 602.29 2150 2159 496.9
C 13 61 16787 29.44 2150 2159 496.9
C 8 222 10542 16.87 2150 2159 496.9
D 2 152 130625 246.07 2145 2077 522.4
D 5 233 124717 234.76 2145 2077 522.4
D 12 233 107958 202.68 2145 2077 522.4

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