ASTROSAT CZTI

Data Quality Report

Orbit 21228

Creation date: 2024-06-27T18:25:14.250726
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/AS1A06_005T05_9000003136_21228cztM0_level2.evt modeM0/AS1A06_005T05_9000003136_21228cztM0_level2_quad_clean.evt
Size (bytes)1,128,268,800127,434,240
Size1.1 GB 121.5 MB
Events in quadrant A16,948,325689,607
Events in quadrant B5,185,546834,355
Events in quadrant C4,871,670814,935
Events in quadrant D6,445,107780,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577431
B0221771
C0216151
D0266361

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10662361733.924217%
B106631181.106630%
C106631191.116009%
D106631991.866267%

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 11062 10662 3111 3111 28.12% 29.18%
B 11063 10663 21 21 0.19% 0.20%
C 11063 10663 0 0 0.00% 0.00%
D 11063 10663 114 114 1.03% 1.07%

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 15 236 12693109 60019.02 1055 1032 211.5
A 11 47 136716 641.63 1055 1032 211.5
A 5 16 45088 208.33 1055 1032 211.5
B 0 197 90168 374.36 1253 1221 237.6
B 0 230 57575 237.18 1253 1221 237.6
B 0 190 39359 160.51 1253 1221 237.6
C 14 238 185603 653.34 1201 1206 282.2
C 13 61 8590 26.16 1201 1206 282.2
C 7 220 6941 20.32 1201 1206 282.2
D 13 174 991555 3360.5 1208 1174 294.7
D 13 153 275461 930.7 1208 1174 294.7
D 1 20 267561 903.89 1208 1174 294.7

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