ASTROSAT CZTI

Data Quality Report

Orbit 27381

Creation date: 2024-06-27T19:39:32.614642
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/AS1T03_249T01_9000003934_27381cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27381cztM0_level2_quad_clean.evt
Size (bytes)988,620,480120,689,280
Size942.8 MB 115.1 MB
Events in quadrant A4,619,725816,185
Events in quadrant B4,711,042809,779
Events in quadrant C11,244,273591,658
Events in quadrant D8,699,248752,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202260
B0204950
C0401820
D0329010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9866540.547334%
B9867900.912131%
C9867292429.634134%
D98677717.813925%

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 10941 9868 0 0 0.00% 0.00%
B 10942 9869 3 3 0.03% 0.03%
C 10942 9869 2397 2397 21.91% 24.29%
D 10942 9869 578 578 5.28% 5.86%

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 17327 67.25 1191 1167 240.3
A 12 96 15222 58.49 1191 1167 240.3
A 3 137 11211 41.8 1191 1167 240.3
B 15 32 47695 206.48 1176 1143 225.4
B 12 111 28050 119.35 1176 1143 225.4
B 11 111 25101 106.27 1176 1143 225.4
C 2 16 7236550 31925.61 960 964 226.6
C 14 238 152028 666.54 960 964 226.6
C 15 208 107230 468.88 960 964 226.6
D 1 52 3010801 11233.84 1121 1095 267.9
D 12 227 854417 3185.06 1121 1095 267.9
D 2 250 498256 1855.67 1121 1095 267.9

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