ASTROSAT CZTI

Data Quality Report

Orbit 33248

Creation date: 2024-06-27T20:46:36.666388
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_046T01_9000004776_33248cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33248cztM0_level2_quad_clean.evt
Size (bytes)601,741,440107,743,680
Size573.9 MB 102.8 MB
Events in quadrant A6,325,627719,702
Events in quadrant B3,631,955755,495
Events in quadrant C2,670,249736,377
Events in quadrant D5,247,243689,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224163
B0139512
C0110282
D0193812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517290017.401392%
B51722164.176334%
C5172390.754060%
D51722855.510441%

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 7115 5173 700 700 9.84% 13.53%
B 7115 5173 157 157 2.21% 3.03%
C 7115 5173 28 28 0.39% 0.54%
D 7115 5173 249 249 3.50% 4.81%

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 15 169 3885924 31653.71 627 618 122.7
A 13 6 11376 87.65 627 618 122.7
A 13 254 8780 66.5 627 618 122.7
B 5 172 567489 4792.7 632 618 118.3
B 0 219 146537 1233.7 632 618 118.3
B 4 170 140327 1181.19 632 618 118.3
C 0 10 150225 1064.74 615 621 140.5
C 10 49 79623 562.26 615 621 140.5
C 3 233 16661 114.16 615 621 140.5
D 8 195 1828385 11940.13 621 606 153.1
D 12 3 474934 3098.59 621 606 153.1
D 13 249 118982 773.3 621 606 153.1

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