ASTROSAT CZTI

Data Quality Report

Orbit 17908

Creation date: 2024-06-27T17:42:27.330040
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/AS1A05_227T07_9000002666_17908cztM0_level2.evt modeM0/AS1A05_227T07_9000002666_17908cztM0_level2_quad_clean.evt
Size (bytes)90,161,28022,625,280
Size86.0 MB 21.6 MB
Events in quadrant A588,880151,940
Events in quadrant B668,455156,825
Events in quadrant C601,865150,312
Events in quadrant D793,082141,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024831
B027141
C024791
D031161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1114201.795332%
B1114312.782765%
C1115363.228700%
D1115696.188341%

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 2164 1115 0 0 0.00% 0.00%
B 2164 1115 1 1 0.05% 0.09%
C 2165 1116 0 0 0.00% 0.00%
D 2165 1116 28 28 1.29% 2.51%

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 4 2 3989 117.67 151 147 32.7
A 0 226 1330 36.23 151 147 32.7
A 12 194 1177 31.55 151 147 32.7
B 0 189 27272 846.96 152 149 32.0
B 0 244 15505 479.52 152 149 32.0
B 0 197 6890 210.5 152 149 32.0
C 14 238 22074 592.22 148 148 37.0
C 3 233 2495 63.39 148 148 37.0
C 13 61 1024 23.66 148 148 37.0
D 5 222 84778 2199.48 146 142 38.5
D 15 0 55231 1431.63 146 142 38.5
D 2 165 31026 802.6 146 142 38.5

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