ASTROSAT CZTI

Data Quality Report

Orbit 15172

Creation date: 2024-06-27T17:04:47.716446
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_068T01_9000002238_15172cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15172cztM0_level2_quad_clean.evt
Size (bytes)506,168,64077,394,240
Size482.7 MB 73.8 MB
Events in quadrant A3,831,883467,293
Events in quadrant B3,455,549474,812
Events in quadrant C3,530,503465,494
Events in quadrant D4,036,709448,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161013
B0146632
C0149072
D0168752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69981391.986282%
B69981402.000572%
C6998781.114604%
D69982944.201200%

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 7594 7000 19 19 0.25% 0.27%
B 7594 7000 4 4 0.05% 0.06%
C 7594 7000 1 1 0.01% 0.01%
D 7594 7000 205 205 2.70% 2.93%

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 15 239 420814 2429.86 852 832 172.8
A 9 143 76163 435.84 852 832 172.8
A 0 253 39593 224.26 852 832 172.8
B 3 64 40725 238.46 859 838 167.3
B 0 189 25428 147.01 859 838 167.3
B 12 111 20025 114.71 859 838 167.3
C 3 233 273686 1410.42 834 840 193.4
C 14 234 6243 27.93 834 840 193.4
C 13 61 5937 26.35 834 840 193.4
D 2 33 815346 4055.69 820 794 200.8
D 2 16 39680 193.62 820 794 200.8
D 12 222 36220 176.39 820 794 200.8

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