ASTROSAT CZTI

Data Quality Report

Orbit 20799

Creation date: 2024-06-27T18:19:42.990358
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/AS1A05_013T01_9000003070_20799cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20799cztM0_level2_quad_clean.evt
Size (bytes)504,745,920115,148,160
Size481.4 MB 109.8 MB
Events in quadrant A3,103,406799,952
Events in quadrant B3,364,655797,058
Events in quadrant C3,428,424764,118
Events in quadrant D5,001,002725,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128022
B0137021
C0139421
D0188991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5728611.064944%
B5728941.641061%
C57282033.543994%
D57285199.060754%

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 7083 5728 0 0 0.00% 0.00%
B 7083 5728 17 17 0.24% 0.30%
C 7083 5728 102 102 1.44% 1.78%
D 7083 5728 447 447 6.31% 7.80%

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 0 226 6947 38.59 807 794 159.4
A 12 194 5852 31.73 807 794 159.4
A 3 137 5741 31.03 807 794 159.4
B 7 220 161375 1107.83 787 771 145.0
B 0 189 38530 260.46 787 771 145.0
B 3 64 23271 155.2 787 771 145.0
C 9 54 323499 1857.8 764 772 173.7
C 14 238 122228 699.17 764 772 173.7
C 13 61 5316 26.16 764 772 173.7
D 1 52 1459034 8132.14 757 739 179.3
D 1 20 415608 2313.5 757 739 179.3
D 12 227 156139 866.58 757 739 179.3

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