ASTROSAT CZTI

Data Quality Report

Orbit 23653

Creation date: 2024-06-27T18:57:14.381781
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/AS1A07_091T04_9000003492_23653cztM0_level2.evt modeM0/AS1A07_091T04_9000003492_23653cztM0_level2_quad_clean.evt
Size (bytes)283,432,32051,975,360
Size270.3 MB 49.6 MB
Events in quadrant A1,798,601334,946
Events in quadrant B2,086,864340,729
Events in quadrant C1,819,849330,404
Events in quadrant D2,624,608305,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205
B0227
C0216
D0205

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105982858
B0115863087
C0106592856
D0146174264

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010531
B010330
C010737
D010122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3723220.590921%
B37231082.900886%
C3747391.040833%
D36481754.797149%

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 11070 4012 0 0 0.00% 0.00%
B 11072 4002 62 62 0.56% 1.55%
C 11071 4016 0 0 0.00% 0.00%
D 11070 3937 109 109 0.98% 2.77%

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 13 254 5618 55.27 467 457 93.4
A 3 137 4150 39.55 467 457 93.4
A 0 226 4060 38.59 467 457 93.4
B 3 64 136833 1548.14 462 452 88.1
B 0 229 61571 693.8 462 452 88.1
B 0 189 50623 569.52 462 452 88.1
C 14 238 72809 698.05 446 448 103.7
C 7 247 4939 43.32 446 448 103.7
C 13 61 3160 26.16 446 448 103.7
D 1 52 595269 5688.38 429 416 104.6
D 9 85 289523 2764.63 429 416 104.6
D 13 189 90271 859.25 429 416 104.6

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