ASTROSAT CZTI

Data Quality Report

Orbit 25990

Creation date: 2024-06-27T19:23:35.348240
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/AS1A07_068T01_9000003760_25990cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25990cztM0_level2_quad_clean.evt
Size (bytes)253,848,96038,099,520
Size242.1 MB 36.3 MB
Events in quadrant A1,717,370229,849
Events in quadrant B1,754,114232,871
Events in quadrant C1,745,017215,759
Events in quadrant D2,201,367196,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078020
B078150
C077880
D091790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125
B0111
C0113
D0126

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384680.208008%
B3848190.493763%
C3830260.678851%
D37621544.093567%

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 10243 4138 0 0 0.00% 0.00%
B 10145 4118 0 0 0.00% 0.00%
C 10142 4107 0 0 0.00% 0.00%
D 10141 4069 128 128 1.26% 3.15%

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 13 254 5906 59.7 445 435 91.6
A 3 137 4240 41.52 445 435 91.6
A 0 226 3695 35.57 445 435 91.6
B 12 111 10999 121.75 446 435 86.8
B 11 111 9563 105.2 446 435 86.8
B 14 111 9138 100.3 446 435 86.8
C 14 238 67758 666.34 423 426 101.0
C 3 233 20944 203.05 423 426 101.0
C 2 16 8678 81.67 423 426 101.0
D 1 52 652741 6588.63 406 395 99.0
D 2 234 13214 129.47 406 395 99.0
D 12 233 5089 47.41 406 395 99.0

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