ASTROSAT CZTI

Data Quality Report

Orbit 23070

Creation date: 2024-06-27T18:49:21.384638
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/AS1A07_049T01_9000003408_23070cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23070cztM0_level2_quad_clean.evt
Size (bytes)501,356,16095,155,200
Size478.1 MB 90.7 MB
Events in quadrant A3,147,917619,500
Events in quadrant B3,302,017640,494
Events in quadrant C3,388,493612,981
Events in quadrant D4,907,046558,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134352
B0138492
C0140562
D0188642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451200.310029%
B6451540.837080%
C64511071.658658%
D64515778.944350%

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 7676 6452 0 0 0.00% 0.00%
B 7676 6452 10 10 0.13% 0.15%
C 7676 6452 9 9 0.12% 0.14%
D 7676 6452 423 423 5.51% 6.56%

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 13 254 11554 65.94 814 798 163.1
A 0 226 7133 38.84 814 798 163.1
A 3 137 7009 38.08 814 798 163.1
B 4 216 56955 367.86 816 796 152.7
B 12 111 18263 114.41 816 796 152.7
B 0 189 16925 105.65 816 796 152.7
C 14 238 128272 683.4 796 802 186.5
C 0 207 80981 429.86 796 802 186.5
C 0 10 66398 351.68 796 802 186.5
D 1 52 1355682 7181.46 776 755 188.7
D 1 239 352972 1866.84 776 755 188.7
D 13 172 111501 586.98 776 755 188.7

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