ASTROSAT CZTI

Data Quality Report

Orbit 06877

Creation date: 2024-06-27T15:12:40.489695
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/AS1A02_005T01_9000000948_06877cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06877cztM0_level2_quad_clean.evt
Size (bytes)452,825,28086,699,520
Size431.8 MB 82.7 MB
Events in quadrant A3,150,750542,152
Events in quadrant B3,246,211550,863
Events in quadrant C3,362,371547,629
Events in quadrant D3,507,057525,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137443
B0140152
C0140912
D0149582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580731.109422%
B6580951.443769%
C65801041.580547%
D65801271.930091%

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 8880 6582 0 0 0.00% 0.00%
B 8880 6582 0 0 0.00% 0.00%
C 8880 6582 1 1 0.01% 0.02%
D 8880 6582 30 30 0.34% 0.46%

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 13 251 30392 181.83 802 786 162.8
A 15 223 10920 62.24 802 786 162.8
A 0 226 7843 43.34 802 786 162.8
B 15 204 41393 264.26 809 791 153.6
B 0 214 26282 165.91 809 791 153.6
B 4 80 15354 94.78 809 791 153.6
C 9 247 291361 1594.74 785 790 182.2
C 13 61 6100 29.14 785 790 182.2
C 7 159 3904 17.09 785 790 182.2
D 13 169 242990 1259.89 785 759 192.3
D 12 221 162420 840.83 785 759 192.3
D 8 195 74148 381.71 785 759 192.3

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