ASTROSAT CZTI

Data Quality Report

Orbit 04984

Creation date: 2024-06-27T14:50:00.797211
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/AS1T01_135T01_9000000632_04984cztM0_level2.evt modeM0/AS1T01_135T01_9000000632_04984cztM0_level2_quad_clean.evt
Size (bytes)268,781,76038,471,040
Size256.3 MB 36.7 MB
Events in quadrant A1,949,385233,840
Events in quadrant B2,012,710233,774
Events in quadrant C1,913,537223,018
Events in quadrant D2,009,810210,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081930
B083526
C081390
D084780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37221644.406233%
B37202266.075269%
C37221042.794197%
D37221714.594304%

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 3721 3721 0 0 0.00% 0.00%
B 3722 3720 0 0 0.00% 0.00%
C 3721 3721 0 0 0.00% 0.00%
D 3721 3721 9 9 0.24% 0.24%

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 12 194 5087 43.42 506 495 105.8
A 0 226 4985 42.46 506 495 105.8
A 3 137 1270 7.33 506 495 105.8
B 0 219 50178 484.67 505 491 102.5
B 12 111 9822 91.02 505 491 102.5
B 11 111 7598 69.33 505 491 102.5
C 13 61 4006 29.82 489 492 117.9
C 12 4 2369 15.93 489 492 117.9
C 8 222 1780 10.93 489 492 117.9
D 13 235 109661 888.06 487 471 123.0
D 2 234 34451 276.37 487 471 123.0
D 13 239 17990 142.49 487 471 123.0

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