ASTROSAT CZTI

Data Quality Report

Orbit 37204

Creation date: 2024-06-27T21:36:52.552612
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_079T01_9000005284_37204cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37204cztM0_level2_quad_clean.evt
Size (bytes)459,682,56094,559,040
Size438.4 MB 90.2 MB
Events in quadrant A2,802,958645,306
Events in quadrant B3,532,328633,592
Events in quadrant C3,752,949626,651
Events in quadrant D3,478,742591,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114793
B0137842
C0143882
D0137272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5223160.306337%
B52231993.810071%
C5223420.804136%
D52232144.097262%

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 7315 5224 9 9 0.12% 0.17%
B 7315 5224 145 145 1.98% 2.78%
C 7315 5224 29 29 0.40% 0.56%
D 7315 5224 161 161 2.20% 3.08%

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 262279 2030.37 644 633 128.9
A 13 248 14369 106.59 644 633 128.9
A 9 143 13290 98.22 644 633 128.9
B 5 172 694964 5814.54 624 609 119.4
B 0 213 321704 2688.86 624 609 119.4
B 0 155 33295 273.71 624 609 119.4
C 10 49 914423 6371.5 618 623 143.4
C 15 214 227022 1578.58 618 623 143.4
C 0 10 96994 671.95 618 623 143.4
D 2 249 805145 5378.58 616 601 149.6
D 2 153 136340 907.45 616 601 149.6
D 13 249 51872 342.76 616 601 149.6

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