ASTROSAT CZTI

Data Quality Report

Orbit 40425

Creation date: 2024-06-27T22:15:57.246207
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/AS1A12_022T01_9000005540_40425cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40425cztM0_level2_quad_clean.evt
Size (bytes)665,069,760175,230,720
Size634.3 MB 167.1 MB
Events in quadrant A5,745,1371,174,010
Events in quadrant B6,548,1811,206,689
Events in quadrant C5,123,3081,163,789
Events in quadrant D6,345,566996,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240454
B0275443
C0225783
D0268943

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11034530.480334%
B110341161.051296%
C11034180.163132%
D110349528.627877%

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 15093 11037 34 34 0.23% 0.31%
B 15093 11037 2 2 0.01% 0.02%
C 15093 11037 8 8 0.05% 0.07%
D 15093 11037 168 168 1.11% 1.52%

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 10 83 878799 3654.55 1184 1161 240.1
A 13 248 213854 885.67 1184 1161 240.1
A 2 79 28015 111.82 1184 1161 240.1
B 7 202 1583275 7031.57 1173 1141 225.0
B 3 112 150170 662.34 1173 1141 225.0
B 4 170 91975 403.7 1173 1141 225.0
C 15 214 473091 1768.15 1154 1161 266.9
C 14 254 135192 502.17 1154 1161 266.9
C 4 254 10025 33.21 1154 1161 266.9
D 12 227 1215027 4480.7 1103 1070 270.9
D 12 191 291011 1070.17 1103 1070 270.9
D 2 250 129886 475.46 1103 1070 270.9

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