ASTROSAT CZTI

Data Quality Report

Orbit 26531

Creation date: 2024-06-27T19:30:06.612434
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/AS1C05_019T04_9000003838_26531cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26531cztM0_level2_quad_clean.evt
Size (bytes)609,353,280103,487,040
Size581.1 MB 98.7 MB
Events in quadrant A2,907,958754,885
Events in quadrant B3,474,224744,833
Events in quadrant C3,289,258722,357
Events in quadrant D8,404,033520,024

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121300
B0139510
C0133430
D0288370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5589480.858830%
B55891492.665951%
C5590981.753131%
D5590247844.329159%

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 6909 5589 0 0 0.00% 0.00%
B 6909 5589 97 97 1.40% 1.74%
C 6910 5590 9 9 0.13% 0.16%
D 6909 5589 1943 1943 28.12% 34.76%

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 5 168 61163 417.57 735 723 144.7
A 13 254 9829 62.91 735 723 144.7
A 0 226 6691 41.23 735 723 144.7
B 3 64 355305 2707.31 718 702 131.0
B 15 222 105710 801.71 718 702 131.0
B 3 112 74657 564.63 718 702 131.0
C 3 233 368638 2287.32 705 713 160.9
C 14 238 113290 699.87 705 713 160.9
C 4 254 38887 237.32 705 713 160.9
D 7 80 5112155 37080.61 566 552 137.9
D 1 52 577059 4182.1 566 552 137.9
D 12 233 454014 3289.51 566 552 137.9

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