ASTROSAT CZTI

Data Quality Report

Orbit 13191

Creation date: 2024-06-27T16:37:47.195341
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_176T04_9000001964_13191cztM0_level2.evt modeM0/AS1A04_176T04_9000001964_13191cztM0_level2_quad_clean.evt
Size (bytes)661,472,64077,319,360
Size630.8 MB 73.7 MB
Events in quadrant A3,427,737477,704
Events in quadrant B3,963,371482,458
Events in quadrant C3,083,432485,434
Events in quadrant D9,092,512416,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145912
B0162551
C0141341
D0317271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68741612.342159%
B68743555.164388%
C68741131.643875%
D6874228533.241199%

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 7085 6876 0 0 0.00% 0.00%
B 7085 6876 141 141 1.99% 2.05%
C 7085 6876 5 5 0.07% 0.07%
D 7085 6876 1524 1524 21.51% 22.16%

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 15 200337 1207.77 801 782 165.2
A 12 189 117733 707.83 801 782 165.2
A 1 162 14359 82.17 801 782 165.2
B 4 239 668140 4375.53 792 772 152.5
B 0 197 57946 374.86 792 772 152.5
B 3 64 33936 217.44 792 772 152.5
C 15 208 42859 231.73 778 779 181.6
C 13 61 5714 27.18 778 779 181.6
C 8 128 3894 17.15 778 779 181.6
D 13 122 4792556 29237.84 678 658 163.9
D 1 52 1602522 9773.8 678 658 163.9
D 10 157 74890 452.93 678 658 163.9

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