ASTROSAT CZTI

Data Quality Report

Orbit 31489

Creation date: 2024-06-27T20:29:09.970128
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/AS1T04_028T01_9000004584_31489cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31489cztM0_level2_quad_clean.evt
Size (bytes)37,825,92010,059,840
Size36.1 MB 9.6 MB
Events in quadrant A240,60867,461
Events in quadrant B357,83366,853
Events in quadrant C238,83265,523
Events in quadrant D272,01062,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0102
C0102
D0102

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106163
B01560113
C0105962
D01184101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113973129154845646
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49200.000000%
B48210.207469%
C49110.203666%
D48230.622407%

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 699 502 0 0 0.00% 0.00%
B 698 498 0 0 0.00% 0.00%
C 696 505 0 0 0.00% 0.00%
D 688 494 3 3 0.44% 0.61%

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 5929 408.89 60 59 14.4
A 13 254 869 56.42 60 59 14.4
A 3 137 568 35.46 60 59 14.4
B 6 159 121145 8952.19 57 56 13.5
B 4 80 3846 280.2 57 56 13.5
B 0 230 1677 119.84 57 56 13.5
C 14 238 9301 601.81 57 57 15.4
C 0 10 3943 252.99 57 57 15.4
C 2 114 1084 66.86 57 57 15.4
D 8 195 31549 2027.43 57 55 15.5
D 2 250 9192 588.19 57 55 15.5
D 2 120 8469 541.65 57 55 15.5

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