ASTROSAT CZTI

Data Quality Report

Orbit 37932

Creation date: 2024-06-27T21:46:19.558256
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/AS1A11_082T01_9000005356_37932cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37932cztM0_level2_quad_clean.evt
Size (bytes)578,413,44071,784,000
Size551.6 MB 68.5 MB
Events in quadrant A3,800,190458,216
Events in quadrant B3,986,710467,894
Events in quadrant C2,888,696476,322
Events in quadrant D6,439,812356,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150373
B0158372
C0124212
D0233032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59322113.556979%
B59322614.399865%
C5932180.303439%
D5932100516.942009%

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 7215 5933 195 195 2.70% 3.29%
B 7215 5933 149 149 2.07% 2.51%
C 7215 5933 14 14 0.19% 0.24%
D 7215 5933 1034 1034 14.33% 17.43%

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 15 222 834143 6301.95 649 636 132.3
A 10 83 388302 2931.05 649 636 132.3
A 12 189 33228 246.42 649 636 132.3
B 5 172 429947 3451.43 648 629 124.4
B 4 171 305981 2454.82 648 629 124.4
B 0 229 256363 2055.93 648 629 124.4
C 15 214 248875 1662.47 638 641 149.3
C 0 10 99957 665.14 638 641 149.3
C 14 254 32180 211.22 638 641 149.3
D 12 227 3583074 24638.11 597 581 145.4
D 10 253 134665 922.14 597 581 145.4
D 12 233 129252 884.91 597 581 145.4

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