ASTROSAT CZTI

Data Quality Report

Orbit 28374

Creation date: 2024-06-27T19:51:06.183059
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_101T02_9000004084_28374cztM0_level2.evt modeM0/AS1A10_101T02_9000004084_28374cztM0_level2_quad_clean.evt
Size (bytes)536,391,36079,416,000
Size511.5 MB 75.7 MB
Events in quadrant A3,557,863483,113
Events in quadrant B3,768,475493,995
Events in quadrant C3,529,840468,157
Events in quadrant D4,898,768456,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151440
B0155810
C0149420
D0194200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72191051.454495%
B72191151.593018%
C72191131.565314%
D72191231.703837%

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 7804 7220 21 21 0.27% 0.29%
B 7804 7220 8 8 0.10% 0.11%
C 7804 7220 0 0 0.00% 0.00%
D 7804 7220 80 80 1.03% 1.11%

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 64488 351.24 897 878 181.1
A 12 96 27175 145.21 897 878 181.1
A 13 254 11848 60.57 897 878 181.1
B 10 245 179946 1026.85 900 876 174.4
B 10 246 32827 183.22 900 876 174.4
B 12 111 21805 120.01 900 876 174.4
C 14 238 137231 663.45 868 872 205.5
C 7 220 6266 26.24 868 872 205.5
C 13 61 5847 24.21 868 872 205.5
D 8 195 1156847 5512.04 868 843 209.7
D 1 52 319981 1521.71 868 843 209.7
D 2 250 91537 432.45 868 843 209.7

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