ASTROSAT CZTI

Data Quality Report

Orbit 07336

Creation date: 2024-06-27T15:18:33.859249
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/AS1A02_178T01_9000001006_07336cztM0_level2.evt modeM0/AS1A02_178T01_9000001006_07336cztM0_level2_quad_clean.evt
Size (bytes)413,184,96079,081,920
Size394.0 MB 75.4 MB
Events in quadrant A2,981,721501,055
Events in quadrant B2,947,920510,830
Events in quadrant C2,919,596495,747
Events in quadrant D3,266,039478,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128052
B0126491
C0125631
D0138801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5856941.605191%
B5856691.178279%
C5856691.178279%
D58561642.800546%

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 7071 5856 22 22 0.31% 0.38%
B 7071 5856 8 8 0.11% 0.14%
C 7071 5856 25 25 0.35% 0.43%
D 7071 5856 92 92 1.30% 1.57%

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 15 234 175140 1204.49 710 696 144.8
A 14 111 56565 385.76 710 696 144.8
A 13 248 12835 83.82 710 696 144.8
B 0 214 50487 368.12 720 704 135.2
B 11 51 40339 293.08 720 704 135.2
B 0 245 23584 169.19 720 704 135.2
C 1 16 163881 1026.66 687 693 159.0
C 9 68 63940 397.9 687 693 159.0
C 13 61 5281 28.86 687 693 159.0
D 12 221 595448 3631.47 676 656 163.8
D 14 34 37382 224.23 676 656 163.8
D 2 14 36418 218.34 676 656 163.8

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