ASTROSAT CZTI

Data Quality Report

Orbit 21185

Creation date: 2024-06-27T18:24:40.526005
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/AS1A06_002T01_9000003134_21185cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21185cztM0_level2_quad_clean.evt
Size (bytes)494,654,40094,150,080
Size471.7 MB 89.8 MB
Events in quadrant A3,113,993623,449
Events in quadrant B3,276,507628,787
Events in quadrant C3,145,891606,504
Events in quadrant D5,030,811567,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133311
B0134701
C0132751
D0190281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100691.131148%
B61001101.803279%
C6100781.278689%
D61014928.064252%

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 7010 6102 3 3 0.04% 0.05%
B 7010 6102 44 44 0.63% 0.72%
C 7010 6101 0 0 0.00% 0.00%
D 7011 6103 533 533 7.60% 8.73%

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 13 252 205925 1354.98 747 730 151.4
A 8 6 14415 90.37 747 730 151.4
A 13 254 8709 52.69 747 730 151.4
B 0 189 163370 1159.86 738 719 140.2
B 3 64 75695 534.65 738 719 140.2
B 0 190 40962 286.97 738 719 140.2
C 3 233 244461 1458.45 711 714 167.1
C 14 238 112052 666.19 711 714 167.1
C 10 91 17145 98.31 711 714 167.1
D 7 238 1849548 10595.54 710 690 174.5
D 1 20 211884 1210.32 710 690 174.5
D 15 0 125800 716.99 710 690 174.5

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