ASTROSAT CZTI

Data Quality Report

Orbit 00250

Creation date: 2024-06-27T13:58:26.420786
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/AS1P01_122T01_9000000026_00250cztM0_level2.evt modeM0/AS1P01_122T01_9000000026_00250cztM0_level2_quad_clean.evt
Size (bytes)875,427,84055,563,840
Size834.9 MB 53.0 MB
Events in quadrant A6,496,127325,312
Events in quadrant B6,566,974330,328
Events in quadrant C6,113,040319,916
Events in quadrant D6,958,570309,379

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233423
B0235292
C0222242
D0247512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568430.052780%
B568430.052780%
C568420.035186%
D5684711.249120%

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 7390 5685 120 120 1.62% 2.11%
B 7390 5685 80 80 1.08% 1.41%
C 7390 5685 42 42 0.57% 0.74%
D 7390 5685 327 327 4.42% 5.75%

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 15 250 89442 238.23 1655 1638 368.6
A 13 9 7517 15.95 1655 1638 368.6
A 13 239 4721 8.36 1655 1638 368.6
B 2 32 107593 272.43 1671 1683 388.8
B 0 214 33805 82.63 1671 1683 388.8
B 0 190 13237 29.72 1671 1683 388.8
C 9 68 11071 21.85 1549 1610 432.9
C 2 192 10967 21.61 1549 1610 432.9
C 9 85 6227 10.66 1549 1610 432.9
D 1 4 767222 1667.65 1463 1521 459.1
D 13 7 223896 484.32 1463 1521 459.1
D 10 154 156372 337.26 1463 1521 459.1

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