ASTROSAT CZTI

Data Quality Report

Orbit 23478

Creation date: 2024-06-27T18:54:57.407900
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_148T02_9000003474_23478cztM0_level2.evt modeM0/AS1A07_148T02_9000003474_23478cztM0_level2_quad_clean.evt
Size (bytes)469,992,96097,853,760
Size448.2 MB 93.3 MB
Events in quadrant A3,391,352642,634
Events in quadrant B3,442,921652,782
Events in quadrant C3,515,608629,146
Events in quadrant D3,467,772611,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135351
B0138291
C0141731
D0137651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132791.288324%
B6133811.320724%
C61331272.070765%
D61331091.777271%

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 7467 6132 3 3 0.04% 0.05%
B 7468 6133 1 1 0.01% 0.02%
C 7468 6133 3 3 0.04% 0.05%
D 7468 6133 35 35 0.47% 0.57%

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 12 96 46648 268.33 866 850 170.7
A 13 254 10283 55.27 866 850 170.7
A 0 226 7584 39.45 866 850 170.7
B 0 189 103841 645.97 851 833 159.5
B 12 111 18148 108.58 851 833 159.5
B 11 111 16291 96.94 851 833 159.5
C 14 238 134340 680.94 840 849 196.0
C 7 247 92739 468.74 840 849 196.0
C 3 233 7635 34.62 840 849 196.0
D 7 238 136889 662.47 851 831 205.4
D 13 104 62436 299.96 851 831 205.4
D 2 234 24365 114.59 851 831 205.4

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