ASTROSAT CZTI

Data Quality Report

Orbit 31816

Creation date: 2024-06-27T20:33:06.685518
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/AS1A10_109T01_9000004646_31816cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31816cztM0_level2_quad_clean.evt
Size (bytes)342,685,44062,254,080
Size326.8 MB 59.4 MB
Events in quadrant A2,568,359415,176
Events in quadrant B2,843,570423,996
Events in quadrant C2,200,637414,505
Events in quadrant D2,534,407390,373

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07711
B0759
C0757
D0777

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110701044
B0117721184
C09699796
D010487788

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087
B043
C055
D032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33992387.002059%
B3363611.813857%
C34211343.916983%
D34131394.072663%

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 7483 3468 151 151 2.02% 4.35%
B 7483 3439 5 5 0.07% 0.15%
C 7483 3489 32 32 0.43% 0.92%
D 7483 3482 96 96 1.28% 2.76%

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 0 13 675495 7001.5 490 485 96.4
A 13 254 5899 56.16 490 485 96.4
A 3 137 4481 41.45 490 485 96.4
B 6 159 876617 9487.15 486 476 92.4
B 10 245 51813 555.89 486 476 92.4
B 12 111 10642 110.08 486 476 92.4
C 0 10 166483 1458.43 484 489 113.8
C 14 238 81025 707.59 484 489 113.8
C 3 233 48837 424.79 484 489 113.8
D 8 195 393062 3439.2 482 471 114.2
D 1 52 236848 2070.72 482 471 114.2
D 12 233 29918 257.96 482 471 114.2

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