ASTROSAT CZTI

Data Quality Report

Orbit 36907

Creation date: 2024-06-27T21:33:05.596432
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/AS1C07_010T01_9000005246_36907cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36907cztM0_level2_quad_clean.evt
Size (bytes)1,290,447,360177,154,560
Size1.2 GB 168.9 MB
Events in quadrant A10,605,4851,370,355
Events in quadrant B3,011,87421,176
Events in quadrant C9,846,9911,332,902
Events in quadrant D14,252,5961,265,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0442635
B0201354
C0412984
D0559104

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198802281.146881%
B1988019880100.000000%
C19880940.472837%
D1988013796.936620%

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 25612 19884 149 149 0.58% 0.75%
B 25611 19879 2 2 0.01% 0.01%
C 25612 19884 75 75 0.29% 0.38%
D 25612 19884 1230 1230 4.80% 6.19%

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 15 223 918512 2036.08 2239 2189 450.0
A 10 83 653652 1447.56 2239 2189 450.0
A 7 16 244195 537.74 2239 2189 450.0
B 12 243 2758001 267441.42 43 42 10.3
B 12 144 52666 5102.99 43 42 10.3
B 5 255 7734 745.9 43 42 10.3
C 15 214 833497 1640.72 2188 2203 506.7
C 0 10 361615 709.37 2188 2203 506.7
C 0 207 116347 225.28 2188 2203 506.7
D 13 249 1361900 2598.89 2137 2080 523.2
D 12 233 1326470 2531.17 2137 2080 523.2
D 10 253 1039788 1983.27 2137 2080 523.2

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