ASTROSAT CZTI

Data Quality Report

Orbit 15786

Creation date: 2024-06-27T17:13:23.220162
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/AS1A04_100T01_9000002336_15786cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15786cztM0_level2_quad_clean.evt
Size (bytes)473,071,68067,023,360
Size451.2 MB 63.9 MB
Events in quadrant A3,517,330388,899
Events in quadrant B3,766,465392,427
Events in quadrant C3,259,181391,554
Events in quadrant D3,324,911385,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148522
B0155231
C0139371
D0143741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6759981.449919%
B6759931.375943%
C6759881.301968%
D6759490.724959%

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 7715 6761 33 33 0.43% 0.49%
B 7715 6761 15 15 0.19% 0.22%
C 7715 6761 1 1 0.01% 0.01%
D 7715 6761 7 7 0.09% 0.10%

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 15 239 323616 1918.47 826 806 168.3
A 15 157 12157 67.46 826 806 168.3
A 0 226 7304 38.61 826 806 168.3
B 3 209 209641 1332.24 826 808 156.8
B 7 220 73715 465.11 826 808 156.8
B 0 190 55552 349.24 826 808 156.8
C 14 238 122000 649.53 798 801 186.6
C 3 233 14352 72.62 798 801 186.6
C 10 22 6413 30.08 798 801 186.6
D 1 52 113185 563.14 812 786 199.6
D 2 152 39357 193.25 812 786 199.6
D 10 70 29920 145.97 812 786 199.6

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