ASTROSAT CZTI

Data Quality Report

Orbit 39500

Creation date: 2024-06-27T22:05:24.036704
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/AS1A12_018T01_9000005488_39500cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39500cztM0_level2_quad_clean.evt
Size (bytes)312,189,12092,568,960
Size297.7 MB 88.3 MB
Events in quadrant A2,999,132624,203
Events in quadrant B2,435,511637,471
Events in quadrant C2,602,491603,611
Events in quadrant D3,088,032550,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126153
B0111842
C0112192
D0130252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5528170.307525%
B552850.090449%
C552840.072359%
D55281322.387844%

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 7231 5529 11 11 0.15% 0.20%
B 7231 5529 0 0 0.00% 0.00%
C 7231 5529 1 1 0.01% 0.02%
D 7231 5529 98 98 1.36% 1.77%

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 10 83 456892 3668.69 607 594 124.4
A 6 10 94422 754.39 607 594 124.4
A 15 174 68693 547.52 607 594 124.4
B 0 213 26152 218.62 607 591 116.9
B 12 111 14654 120.28 607 591 116.9
B 11 111 13460 110.07 607 591 116.9
C 15 214 231781 1661.07 598 601 139.2
C 3 233 27777 195.26 598 601 139.2
C 0 10 8044 53.48 598 601 139.2
D 13 249 407672 2803.45 590 572 145.2
D 2 249 156142 1071.32 590 572 145.2
D 12 227 155902 1069.66 590 572 145.2

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