ASTROSAT CZTI

Data Quality Report

Orbit 13335

Creation date: 2024-06-27T16:39:17.504166
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/AS1A04_101T01_9000001984_13335cztM0_level2.evt modeM0/AS1A04_101T01_9000001984_13335cztM0_level2_quad_clean.evt
Size (bytes)604,941,120119,370,240
Size576.9 MB 113.8 MB
Events in quadrant A4,420,959748,288
Events in quadrant B4,638,737772,229
Events in quadrant C4,459,131754,082
Events in quadrant D4,191,904716,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190895
B0196044
C0190954
D0188284

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89801481.648107%
B89802572.861915%
C89801131.258352%
D8980750.835189%

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 9481 8985 9 9 0.09% 0.10%
B 9481 8985 18 18 0.19% 0.20%
C 9481 8985 9 9 0.09% 0.10%
D 9481 8985 0 0 0.00% 0.00%

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 12 96 36752 154.03 1116 1089 231.5
A 15 69 29989 124.82 1116 1089 231.5
A 8 15 23420 96.45 1116 1089 231.5
B 0 197 82788 370.21 1125 1095 220.7
B 3 64 50877 225.6 1125 1095 220.7
B 0 189 39742 175.14 1125 1095 220.7
C 3 233 89494 345.04 1094 1100 256.2
C 15 208 80726 310.82 1094 1100 256.2
C 8 128 12770 45.55 1094 1100 256.2
D 2 234 32307 116.81 1085 1050 267.6
D 5 222 23607 84.3 1085 1050 267.6
D 2 136 18843 66.49 1085 1050 267.6

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