ASTROSAT CZTI

Data Quality Report

Orbit 06721

Creation date: 2024-06-27T15:10:47.547232
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_003T01_9000000924_06721cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06721cztM0_level2_quad_clean.evt
Size (bytes)521,818,560101,482,560
Size497.6 MB 96.8 MB
Events in quadrant A3,808,289640,441
Events in quadrant B3,576,160650,431
Events in quadrant C3,489,157632,375
Events in quadrant D4,401,633609,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166812
B0160961
C0160401
D0181261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77782563.291335%
B77782463.162767%
C77782222.854204%
D77782453.149910%

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 7888 7781 0 0 0.00% 0.00%
B 7888 7781 0 0 0.00% 0.00%
C 7888 7781 0 0 0.00% 0.00%
D 7888 7781 23 23 0.29% 0.30%

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 14 111 208154 1117.53 899 877 185.5
A 8 15 120415 644.49 899 877 185.5
A 13 251 10673 52.81 899 877 185.5
B 0 198 21504 116.84 908 883 176.5
B 12 111 18704 100.98 908 883 176.5
B 4 170 16399 87.92 908 883 176.5
C 9 247 14669 66.1 885 886 208.5
C 10 22 8281 35.46 885 886 208.5
C 13 61 7043 29.53 885 886 208.5
D 8 195 868664 4035.77 877 849 215.0
D 2 33 102157 471.13 877 849 215.0
D 2 136 51025 233.34 877 849 215.0

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