ASTROSAT CZTI

Data Quality Report

Orbit 26133

Creation date: 2024-06-27T19:25:12.514388
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_9000003776_26133cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26133cztM0_level2_quad_clean.evt
Size (bytes)611,697,60081,783,360
Size583.4 MB 78.0 MB
Events in quadrant A5,962,359486,332
Events in quadrant B3,845,262504,903
Events in quadrant C3,945,082479,182
Events in quadrant D4,257,560477,019

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229890
B0161770
C0164880
D0175950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76032533.327634%
B76031501.972905%
C76031752.301723%
D76031612.117585%

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 8018 7603 62 62 0.77% 0.82%
B 8018 7603 16 16 0.20% 0.21%
C 8018 7603 44 44 0.55% 0.58%
D 8018 7603 84 84 1.05% 1.10%

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 2364154 12504.18 933 912 189.0
A 13 254 11820 57.72 933 912 189.0
A 3 137 8731 41.37 933 912 189.0
B 0 229 137641 753.02 930 904 181.6
B 0 190 37319 200.54 930 904 181.6
B 12 111 21992 116.13 930 904 181.6
C 2 16 304237 1445.05 892 897 209.9
C 14 238 142268 673.46 892 897 209.9
C 3 233 23135 105.94 892 897 209.9
D 1 52 702354 3214.12 908 887 218.2
D 2 234 34080 152.09 908 887 218.2
D 13 168 34034 151.88 908 887 218.2

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