ASTROSAT CZTI

Data Quality Report

Orbit 12124

Creation date: 2024-06-27T16:22:43.245447
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/AS1G08_065T01_9000001796_12124cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12124cztM0_level2_quad_clean.evt
Size (bytes)1,407,430,080250,416,000
Size1.3 GB 238.8 MB
Events in quadrant A10,258,9051,591,634
Events in quadrant B11,849,9411,578,911
Events in quadrant C8,311,9221,589,427
Events in quadrant D10,936,4471,531,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433195
B0473905
C0381684
D0447984

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187583561.897857%
B187577123.795916%
C18757770.410513%
D187574812.564376%

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 25831 18762 70 70 0.27% 0.37%
B 25831 18762 318 318 1.23% 1.69%
C 25831 18762 2 2 0.01% 0.01%
D 25831 18762 300 300 1.16% 1.60%

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 14 63 500144 1129.04 2193 2143 441.1
A 1 162 382819 863.05 2193 2143 441.1
A 13 248 200981 450.79 2193 2143 441.1
B 4 239 2433064 5928.81 2168 2114 410.0
B 11 51 263998 638.71 2168 2114 410.0
B 0 85 251806 608.97 2168 2114 410.0
C 15 208 38252 74.13 2120 2127 487.3
C 13 61 15442 27.32 2120 2127 487.3
C 14 234 12833 21.97 2120 2127 487.3
D 1 52 1448604 2869.66 2097 2037 504.1
D 8 195 587942 1162.3 2097 2037 504.1
D 13 104 279270 549.97 2097 2037 504.1

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