ASTROSAT CZTI

Data Quality Report

Orbit 37260

Creation date: 2024-06-27T21:37:32.645855
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/AS1T04_087T01_9000005292_37260cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37260cztM0_level2_quad_clean.evt
Size (bytes)1,396,704,960178,295,040
Size1.3 GB 170.0 MB
Events in quadrant A11,798,0921,069,990
Events in quadrant B9,769,9871,083,437
Events in quadrant C9,377,1501,041,670
Events in quadrant D10,173,017997,777

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454245
B0396424
C0377934
D0416194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1751310586.041227%
B175131450.827956%
C17513930.531034%
D175133161.804374%

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 25327 17491 818 818 3.23% 4.68%
B 25327 17491 88 88 0.35% 0.50%
C 25327 17491 87 87 0.34% 0.50%
D 25327 17491 247 247 0.98% 1.41%

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 15 237 2856781 6930.84 2081 2046 411.9
A 10 83 711279 1721.9 2081 2046 411.9
A 13 248 96925 230.35 2081 2046 411.9
B 0 213 467174 1166.68 2103 2049 398.7
B 0 190 268285 667.8 2103 2049 398.7
B 0 230 227047 564.37 2103 2049 398.7
C 15 214 735268 1565.05 2029 2040 468.5
C 14 254 504528 1072.54 2029 2040 468.5
C 0 10 210507 444.96 2029 2040 468.5
D 2 153 500948 1006.43 2052 1998 495.8
D 13 249 436544 876.52 2052 1998 495.8
D 2 249 272249 545.12 2052 1998 495.8

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