ASTROSAT CZTI

Data Quality Report

Orbit 31674

Creation date: 2024-06-27T20:31:23.072665
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/AS1A10_056T01_9000004626_31674cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31674cztM0_level2_quad_clean.evt
Size (bytes)626,650,56098,815,680
Size597.6 MB 94.2 MB
Events in quadrant A4,203,891617,530
Events in quadrant B5,267,573661,090
Events in quadrant C5,397,145616,465
Events in quadrant D3,649,339623,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170582
B0207214
C0207742
D0152602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68054316.333578%
B68051382.027921%
C68054035.922116%
D6805210.308597%

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 8940 6807 294 294 3.29% 4.32%
B 8940 6807 0 0 0.00% 0.00%
C 8940 6807 99 99 1.11% 1.45%
D 8940 6807 3 3 0.03% 0.04%

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 0 13 1097701 6826.58 803 785 160.7
A 13 254 11328 65.61 803 785 160.7
A 3 137 8012 44.98 803 785 160.7
B 6 159 1891109 11984.35 832 810 157.7
B 10 245 27203 167.33 832 810 157.7
B 4 80 22501 137.52 832 810 157.7
C 3 233 1806894 9741.43 790 795 185.4
C 0 10 320723 1725.57 790 795 185.4
C 14 238 127643 684.17 790 795 185.4
D 8 195 549623 2847.54 808 785 192.7
D 2 250 31861 161.23 808 785 192.7
D 2 234 27297 137.55 808 785 192.7

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