ASTROSAT CZTI

Data Quality Report

Orbit 20220704_A11_097T24_9000005224_level2

Creation date: 2022-07-07T15:18:13.566687
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/AS1A11_097T24_9000005224cztM0_level2_bc.evt modeM0/AS1A11_097T24_9000005224cztM0_level2_quad_clean.evt
Size (bytes)4,190,999,0401,188,783,360
Size3.9 GB 1.1 GB
Events in quadrant A24,092,2187,560,539
Events in quadrant B22,976,2547,615,833
Events in quadrant C32,977,5247,174,616
Events in quadrant D40,209,5206,933,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02075570
B02081070
C02369090
D02733270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03470
B03470
C03470
D03470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020020
B020020
C020020
D020020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A980863890.396591%
B980845560.566861%
C9808627042.756764%
D9808536513.722282%

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 132678 98107 57 57 0.04% 0.06%
B 132678 98084 53 53 0.04% 0.05%
C 132678 98089 670 670 0.50% 0.68%
D 132678 98086 514 514 0.39% 0.52%

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 10 83 2739090 2433.43 5118 5039 1123.5
A 15 223 1130383 1001.61 5118 5039 1123.5
A 9 143 287586 251.48 5118 5039 1123.5
B 0 213 830370 819.01 5117 5011 1007.8
B 4 171 508017 499.14 5117 5011 1007.8
B 0 190 383195 375.27 5117 5011 1007.8
C 15 214 3907685 3549.89 4826 4792 1099.4
C 0 10 3769492 3424.2 4826 4792 1099.4
C 0 207 2852772 2590.39 4826 4792 1099.4
D 12 235 7940828 6892.08 4895 4751 1151.5
D 2 250 1980118 1715.51 4895 4751 1151.5
D 2 153 1524254 1319.61 4895 4751 1151.5

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