ASTROSAT CZTI

Data Quality Report

Orbit 42107

Creation date: 2024-06-27T22:36:58.724531
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_044T22_9000005750_42107cztM0_level2.fits modeM0/AS1A12_044T22_9000005750_42107cztM0_level2_quad_clean.evt
Size (bytes)428,731,20087,906,240
Size408.9 MB 83.8 MB
Events in quadrant A6,560,777529,677
Events in quadrant B2,703,156620,522
Events in quadrant C2,593,980591,640
Events in quadrant D3,580,492531,130

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233186
B0118482
C0111622
D0146192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555197917.636462%
B5551611.098901%
C555150.090074%
D55512574.629796%

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 7195 5553 751 751 10.44% 13.52%
B 7195 5553 46 46 0.64% 0.83%
C 7195 5553 0 0 0.00% 0.00%
D 7195 5553 229 229 3.18% 4.12%

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 15 222 3049642 24921.59 593 581 122.3
A 15 223 667465 5450.8 593 581 122.3
A 10 83 541637 4422.34 593 581 122.3
B 5 255 256220 2135.04 613 595 119.7
B 15 85 23847 194.21 613 595 119.7
B 12 111 15408 123.72 613 595 119.7
C 15 214 231336 1620.08 605 608 142.4
C 7 220 4352 26.29 605 608 142.4
C 13 61 3979 23.67 605 608 142.4
D 13 249 810177 5465.75 598 579 148.1
D 1 52 214422 1443.7 598 579 148.1
D 12 6 171280 1152.44 598 579 148.1

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