ASTROSAT CZTI

Data Quality Report

Orbit 16163

Creation date: 2024-06-27T17:18:49.358405
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/AS1T02_109T01_9000002386_16163cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16163cztM0_level2_quad_clean.evt
Size (bytes)1,646,061,120303,013,440
Size1.5 GB 289.0 MB
Events in quadrant A13,033,0371,884,169
Events in quadrant B11,880,6171,939,585
Events in quadrant C11,440,5411,851,902
Events in quadrant D11,838,0331,814,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06972013877
B06192510308
C0600919921
D0629189926

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0597105
B059796
C060098
D060189

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03611
B03612
C0367
D03611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245065482.236187%
B245452340.953351%
C244712020.825467%
D245282230.909165%

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 32928 25058 203 203 0.62% 0.81%
B 32928 25068 38 38 0.12% 0.15%
C 32928 25037 2 2 0.01% 0.01%
D 32928 25114 154 154 0.47% 0.61%

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 15 174 1826743 3165.01 2867 2804 576.3
A 0 253 73566 122.79 2867 2804 576.3
A 8 247 61471 101.8 2867 2804 576.3
B 4 142 180623 323.16 2899 2830 550.2
B 0 229 86503 152.09 2899 2830 550.2
B 0 189 72151 126.0 2899 2830 550.2
C 14 238 424093 651.68 2763 2777 646.5
C 3 233 222993 340.63 2763 2777 646.5
C 0 207 27832 38.75 2763 2777 646.5
D 1 52 688843 1000.39 2802 2719 685.9
D 10 70 260099 375.27 2802 2719 685.9
D 7 38 184108 264.47 2802 2719 685.9

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