ASTROSAT CZTI

Data Quality Report

Orbit 22652

Creation date: 2024-06-27T18:44:03.646897
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/AS1A08_007T01_9000003362_22652cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22652cztM0_level2_quad_clean.evt
Size (bytes)535,435,20098,064,000
Size510.6 MB 93.5 MB
Events in quadrant A3,630,478649,761
Events in quadrant B3,845,294655,661
Events in quadrant C3,614,114611,492
Events in quadrant D4,684,028598,270

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149322
B0157242
C0148332
D0184713

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65181211.856398%
B65181171.795029%
C65181712.623504%
D65172333.575265%

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 7828 6519 0 0 0.00% 0.00%
B 7828 6519 0 0 0.00% 0.00%
C 7828 6519 0 0 0.00% 0.00%
D 7827 6518 101 101 1.29% 1.55%

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 12309 61.76 939 923 184.3
A 3 1 10955 54.42 939 923 184.3
A 0 226 8407 40.6 939 923 184.3
B 0 219 80902 476.18 921 903 168.0
B 0 229 79454 467.56 921 903 168.0
B 0 228 42172 245.65 921 903 168.0
C 14 238 145463 725.43 878 886 199.3
C 10 22 19705 94.43 878 886 199.3
C 0 10 15919 75.43 878 886 199.3
D 7 238 651349 2998.36 901 876 216.9
D 1 52 374907 1724.1 901 876 216.9
D 2 136 72710 331.12 901 876 216.9

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