ASTROSAT CZTI

Data Quality Report

Orbit 22402

Creation date: 2024-06-27T18:40:22.043503
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_007T04_9000003310_22402cztM0_level2.evt modeM0/AS1A07_007T04_9000003310_22402cztM0_level2_quad_clean.evt
Size (bytes)438,088,320102,093,120
Size417.8 MB 97.4 MB
Events in quadrant A3,133,304672,011
Events in quadrant B3,211,344677,087
Events in quadrant C3,163,068646,944
Events in quadrant D3,312,761637,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136952
B0139162
C0136722
D0142253

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6574400.608458%
B6574480.730149%
C6574811.232127%
D6573350.532481%

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 7619 6575 0 0 0.00% 0.00%
B 7619 6575 1 1 0.01% 0.02%
C 7619 6575 0 0 0.00% 0.00%
D 7618 6574 12 12 0.16% 0.18%

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 9453 53.23 813 797 162.6
A 0 226 7096 38.73 813 797 162.6
A 3 137 6729 36.48 813 797 162.6
B 3 64 20573 130.47 802 781 151.7
B 0 229 19525 123.56 802 781 151.7
B 12 111 18158 114.55 802 781 151.7
C 14 238 122636 672.28 778 781 181.3
C 13 61 5389 25.42 778 781 181.3
C 10 22 5050 23.55 778 781 181.3
D 1 52 121225 623.6 792 768 193.2
D 7 223 66236 338.93 792 768 193.2
D 13 172 62364 318.88 792 768 193.2

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