ASTROSAT CZTI

Data Quality Report

Orbit 29129

Creation date: 2024-06-27T20:00:37.192204
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/AS1A10_099T01_9000004184_29129cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29129cztM0_level2_quad_clean.evt
Size (bytes)609,281,280118,105,920
Size581.1 MB 112.6 MB
Events in quadrant A3,980,913765,369
Events in quadrant B4,428,114780,565
Events in quadrant C4,116,386747,389
Events in quadrant D5,371,324714,267

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171823
B0184103
C0173533
D0215253

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81792102.567551%
B81793774.609365%
C81793354.095855%
D81804585.599022%

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 8339 8182 0 0 0.00% 0.00%
B 8339 8182 12 12 0.14% 0.15%
C 8339 8182 0 0 0.00% 0.00%
D 8340 8183 236 236 2.83% 2.88%

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 15 174 13741 60.84 1028 1005 209.3
A 13 254 13170 58.11 1028 1005 209.3
A 3 137 10662 46.13 1028 1005 209.3
B 10 246 261585 1318.93 1018 990 197.6
B 10 245 123735 621.24 1018 990 197.6
B 12 111 25531 124.21 1018 990 197.6
C 14 238 158161 664.09 993 999 236.7
C 3 233 38992 160.54 993 999 236.7
C 2 114 19867 79.73 993 999 236.7
D 1 52 1295794 5498.94 984 958 235.5
D 8 195 277702 1175.28 984 958 235.5
D 2 120 36928 152.76 984 958 235.5

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