ASTROSAT CZTI

Data Quality Report

Orbit 11548

Creation date: 2024-06-27T16:15:03.802035
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/AS1T01_206T01_9000001694_11548cztM0_level2.evt modeM0/AS1T01_206T01_9000001694_11548cztM0_level2_quad_clean.evt
Size (bytes)658,774,08073,895,040
Size628.3 MB 70.5 MB
Events in quadrant A5,048,866469,612
Events in quadrant B4,390,438463,890
Events in quadrant C2,990,033463,170
Events in quadrant D7,107,916412,837

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194352
B0169811
C0127331
D0253811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61333405.543780%
B61333575.820969%
C6133550.896788%
D6133113318.473830%

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 7279 6135 144 144 1.98% 2.35%
B 7279 6135 189 189 2.60% 3.08%
C 7279 6135 0 0 0.00% 0.00%
D 7279 6135 932 932 12.80% 15.19%

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 8 5 1407729 8767.7 790 776 160.5
A 1 162 148684 921.72 790 776 160.5
A 9 143 145969 904.8 790 776 160.5
B 4 239 760416 5147.41 779 766 147.6
B 3 64 341540 2309.1 779 766 147.6
B 11 51 151334 1020.25 779 766 147.6
C 13 61 5623 27.3 766 773 177.6
C 14 234 5050 24.08 766 773 177.6
C 3 202 1953 6.64 766 773 177.6
D 13 137 2885536 16511.36 724 706 174.7
D 1 52 1297006 7419.39 724 706 174.7
D 2 120 87961 499.41 724 706 174.7

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