ASTROSAT CZTI

Data Quality Report

Orbit 35204

Creation date: 2022-04-02T18:18:28.117436
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/AS1C07_004T01_9000005052_35204cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35204cztM0_level2_quad_clean.evt
Size (bytes)689,169,60095,276,160
Size657.2 MB 90.9 MB
Events in quadrant A2,831,903696,102
Events in quadrant B8,248,887549,674
Events in quadrant C3,114,693680,148
Events in quadrant D6,345,464614,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116063
B0279502
C0122672
D0223602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4903200.407914%
B4903233847.685091%
C49031633.324495%
D490359012.033449%

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 7026 4904 6 6 0.09% 0.12%
B 7026 4904 1663 1663 23.67% 33.91%
C 7026 4904 118 118 1.68% 2.41%
D 7026 4904 574 574 8.17% 11.70%

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 14 250 178099 1379.21 651 641 128.7
A 10 83 94765 731.53 651 641 128.7
A 13 6 21129 159.23 651 641 128.7
B 5 236 5725954 57955.86 524 513 98.8
B 5 200 325237 3287.02 524 513 98.8
B 4 232 59821 600.35 524 513 98.8
C 0 10 333137 2389.76 611 617 139.1
C 15 214 207115 1484.06 611 617 139.1
C 1 23 152232 1089.63 611 617 139.1
D 8 195 2822399 19248.67 609 595 146.6
D 10 118 386250 2630.71 609 595 146.6
D 7 80 154228 1047.99 609 595 146.6

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