ASTROSAT CZTI

Data Quality Report

Orbit 22700

Creation date: 2024-06-27T18:44:35.549178
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/AS1A08_007T01_9000003362_22700cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22700cztM0_level2_quad_clean.evt
Size (bytes)499,570,56092,597,760
Size476.4 MB 88.3 MB
Events in quadrant A3,221,873597,118
Events in quadrant B3,361,897600,135
Events in quadrant C3,242,018574,015
Events in quadrant D4,840,844557,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140212
B0143481
C0140801
D0188551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6819761.114533%
B68201021.495601%
C6820951.392962%
D68202353.445748%

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 7144 6820 0 0 0.00% 0.00%
B 7145 6821 1 1 0.01% 0.01%
C 7145 6821 0 0 0.00% 0.00%
D 7145 6821 184 184 2.58% 2.70%

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 13 254 12231 67.6 833 816 168.9
A 0 226 7257 38.14 833 816 168.9
A 3 137 6687 34.77 833 816 168.9
B 0 190 47802 298.83 827 807 157.3
B 0 230 44003 274.67 827 807 157.3
B 12 111 17494 106.11 827 807 157.3
C 14 238 124844 672.46 792 796 184.5
C 10 23 14795 75.89 792 796 184.5
C 10 22 7627 37.03 792 796 184.5
D 1 52 778351 4001.08 798 774 194.3
D 12 33 410823 2109.94 798 774 194.3
D 12 235 299553 1537.39 798 774 194.3

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