ASTROSAT CZTI

Data Quality Report

Orbit 20191202_C05_006T01_9000003356_level2

Creation date: 2019-12-04T10:16:42.504101
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_006T01_9000003356cztM0_level2_bc.evt modeM0/AS1C05_006T01_9000003356cztM0_level2_quad_clean.evt
Size (bytes)1,384,571,520589,360,320
Size1.3 GB 562.1 MB
Events in quadrant A9,596,5123,765,060
Events in quadrant B9,627,0283,810,579
Events in quadrant C8,807,3063,633,988
Events in quadrant D10,859,2333,584,226

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09060
B09060
C09060
D09060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0939800
B0941250
C0918900
D0962190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A445526271.407344%
B445526371.429790%
C445526651.492638%
D445523410.765398%

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 49687 44555 3 3 0.01% 0.01%
B 49687 44554 2 2 0.00% 0.00%
C 49687 44553 6 6 0.01% 0.01%
D 49687 44553 14 14 0.03% 0.03%

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 14 238 523457 1040.75 2283 2237 500.8
A 14 235 239900 474.56 2283 2237 500.8
A 13 254 70713 136.73 2283 2237 500.8
B 0 229 277058 618.87 2303 2243 444.1
B 0 197 150711 334.34 2303 2243 444.1
B 0 245 107988 238.13 2303 2243 444.1
C 10 222 193782 372.53 2194 2179 514.3
C 10 22 127889 244.42 2194 2179 514.3
C 8 128 13176 21.38 2194 2179 514.3
D 1 52 869031 1646.38 2259 2173 526.5
D 12 227 670907 1270.1 2259 2173 526.5
D 1 239 327466 617.81 2259 2173 526.5

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