ASTROSAT CZTI

Data Quality Report

Orbit 08212

Creation date: 2024-06-27T15:29:31.968662
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/AS1C02_041T01_9000001136_08212cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08212cztM0_level2_quad_clean.evt
Size (bytes)376,528,32072,921,600
Size359.1 MB 69.5 MB
Events in quadrant A2,758,688453,429
Events in quadrant B2,840,675454,908
Events in quadrant C2,617,235445,206
Events in quadrant D2,778,321435,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124313
B0126372
C0121702
D0125872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5988520.868403%
B5988490.818303%
C5988230.384102%
D5988250.417502%

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 6293 5990 18 18 0.29% 0.30%
B 6293 5990 2 2 0.03% 0.03%
C 6293 5990 0 0 0.00% 0.00%
D 6293 5990 3 3 0.05% 0.05%

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 5 16 72207 499.13 693 678 143.3
A 8 15 17856 119.87 693 678 143.3
A 0 226 6581 41.19 693 678 143.3
B 0 214 72962 532.83 697 680 135.7
B 0 213 21547 153.82 697 680 135.7
B 4 81 18657 132.52 697 680 135.7
C 13 61 5278 29.25 670 671 157.5
C 9 68 3704 19.26 670 671 157.5
C 1 16 1795 7.14 670 671 157.5
D 2 152 127646 740.69 668 650 171.5
D 1 52 63330 365.58 668 650 171.5
D 2 234 21162 119.63 668 650 171.5

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