ASTROSAT CZTI

Data Quality Report

Orbit 31526

Creation date: 2024-06-27T20:29:34.495399
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_053T39_9000004596_31526cztM0_level2.evt modeM0/AS1A10_053T39_9000004596_31526cztM0_level2_quad_clean.evt
Size (bytes)564,606,720114,632,640
Size538.5 MB 109.3 MB
Events in quadrant A3,610,846761,173
Events in quadrant B5,169,155783,716
Events in quadrant C4,040,758760,559
Events in quadrant D3,859,542734,092

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147402
B0194632
C0161722
D0154792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195831.339790%
B61951081.743341%
C61951632.631154%
D6195741.194512%

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 7520 6196 33 33 0.44% 0.53%
B 7520 6196 1 1 0.01% 0.02%
C 7520 6196 3 3 0.04% 0.05%
D 7520 6196 39 39 0.52% 0.63%

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 370128 2218.84 840 826 166.4
A 13 254 10786 59.84 840 826 166.4
A 3 137 7860 42.26 840 826 166.4
B 6 159 1729031 10896.6 846 828 158.6
B 4 80 82425 514.48 846 828 158.6
B 0 190 23002 139.81 846 828 158.6
C 3 233 570755 2954.98 831 842 192.9
C 14 238 135798 699.74 831 842 192.9
C 4 175 41805 212.39 831 842 192.9
D 8 195 511326 2623.91 827 810 194.6
D 12 218 87258 444.32 827 810 194.6
D 2 250 82678 420.78 827 810 194.6

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