ASTROSAT CZTI

Data Quality Report

Orbit 21573

Creation date: 2024-06-27T18:29:40.438568
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_155T02_9000003200_21573cztM0_level2.evt modeM0/AS1A05_155T02_9000003200_21573cztM0_level2_quad_clean.evt
Size (bytes)556,750,08078,393,600
Size531.0 MB 74.8 MB
Events in quadrant A4,375,335466,447
Events in quadrant B3,684,332476,882
Events in quadrant C3,678,793458,715
Events in quadrant D4,618,736454,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177901
B0155711
C0155151
D0187191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74312713.646885%
B74321021.372443%
C74321021.372443%
D74322383.202368%

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 7836 7432 143 143 1.82% 1.92%
B 7837 7433 3 3 0.04% 0.04%
C 7837 7433 0 0 0.00% 0.00%
D 7837 7433 187 187 2.39% 2.52%

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 15 236 792017 4327.51 903 881 182.8
A 15 174 101148 548.46 903 881 182.8
A 13 254 11148 56.16 903 881 182.8
B 0 230 40245 225.7 905 881 174.4
B 3 64 34568 193.15 905 881 174.4
B 0 190 27745 154.03 905 881 174.4
C 14 238 137655 662.89 875 880 206.3
C 3 233 51262 244.18 875 880 206.3
C 0 239 48732 231.92 875 880 206.3
D 2 136 595489 2792.42 880 856 212.9
D 7 38 457238 2143.19 880 856 212.9
D 13 153 87164 405.31 880 856 212.9

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