ASTROSAT CZTI

Data Quality Report

Orbit 29117

Creation date: 2024-06-27T20:00:21.437506
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_063T01_9000004182_29117cztM0_level2.evt modeM0/AS1A10_063T01_9000004182_29117cztM0_level2_quad_clean.evt
Size (bytes)1,357,024,320231,926,400
Size1.3 GB 221.2 MB
Events in quadrant A9,235,4921,446,194
Events in quadrant B9,892,9711,471,228
Events in quadrant C9,230,9371,431,830
Events in quadrant D11,487,2131,399,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394104
B0408963
C0385833
D0465193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185104312.328471%
B185113281.771919%
C185112281.231700%
D185114872.630868%

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 20055 18513 272 272 1.36% 1.47%
B 20056 18514 147 147 0.73% 0.79%
C 20056 18514 1 1 0.00% 0.01%
D 20056 18514 334 334 1.67% 1.80%

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 11 29 547232 1217.03 2224 2181 447.9
A 15 174 78130 169.58 2224 2181 447.9
A 13 254 31962 66.5 2224 2181 447.9
B 10 245 806320 1910.16 2211 2152 421.0
B 10 246 301070 710.03 2211 2152 421.0
B 12 111 53646 122.31 2211 2152 421.0
C 3 233 469156 928.67 2143 2154 502.9
C 14 238 343519 678.83 2143 2154 502.9
C 2 114 43753 82.72 2143 2154 502.9
D 1 52 2306936 4519.63 2141 2082 510.0
D 8 195 901540 1763.76 2141 2082 510.0
D 2 234 78632 150.11 2141 2082 510.0

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