ASTROSAT CZTI

Data Quality Report

Orbit 20210607_A10_071T18_9000004448_level2

Creation date: 2021-06-10T10:40:11.600117
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/AS1A10_071T18_9000004448cztM0_level2_bc.evt modeM0/AS1A10_071T18_9000004448cztM0_level2_quad_clean.evt
Size (bytes)4,379,572,800882,267,840
Size4.1 GB 841.4 MB
Events in quadrant A17,633,6565,734,263
Events in quadrant B34,930,6735,717,471
Events in quadrant C21,973,3805,354,486
Events in quadrant D53,341,3235,100,276

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014260
B014260
C014260
D014260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01552520
B02144390
C01762280
D02670890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7022613531.926637%
B7022616552.356677%
C7022627683.941560%
D7022656898.100988%

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 81641 70216 50 50 0.06% 0.07%
B 81641 70215 9 9 0.01% 0.01%
C 81641 70215 98 98 0.12% 0.14%
D 81641 70218 1608 1608 1.97% 2.29%

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 0 13 2383944 2834.85 3945 3881 839.6
A 13 254 121513 140.11 3945 3881 839.6
A 0 226 24560 24.63 3945 3881 839.6
B 6 159 18886865 25496.95 3957 3872 740.6
B 0 190 260084 345.95 3957 3872 740.6
B 10 247 204619 271.06 3957 3872 740.6
C 3 233 4246394 4908.89 3693 3680 864.3
C 0 10 3204205 3703.06 3693 3680 864.3
C 2 114 132782 149.37 3693 3680 864.3
D 8 195 34874413 36834.01 3704 3618 946.7
D 13 249 1765028 1860.58 3704 3618 946.7
D 12 227 852191 896.35 3704 3618 946.7

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