ASTROSAT CZTI

Data Quality Report

Orbit 16068

Creation date: 2024-06-27T17:17:29.462944
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/AS1A04_230T01_9000002374_16068cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16068cztM0_level2_quad_clean.evt
Size (bytes)462,303,36081,302,400
Size440.9 MB 77.5 MB
Events in quadrant A3,567,383525,098
Events in quadrant B3,617,316523,931
Events in quadrant C2,908,484505,489
Events in quadrant D3,506,586494,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143412
B0146221
C0123411
D0144251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5908400.677048%
B59081242.098849%
C5908510.863236%
D59081512.555856%

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 7124 5910 11 11 0.15% 0.19%
B 7124 5910 54 54 0.76% 0.91%
C 7124 5910 4 4 0.06% 0.07%
D 7124 5910 114 114 1.60% 1.93%

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 13 210 464928 3148.72 725 710 147.4
A 3 80 251078 1698.21 725 710 147.4
A 15 239 52224 349.41 725 710 147.4
B 0 189 347709 2546.73 728 711 136.3
B 7 220 182927 1337.34 728 711 136.3
B 4 216 87585 637.6 728 711 136.3
C 14 238 106381 638.67 702 708 165.5
C 0 207 34243 202.68 702 708 165.5
C 7 247 12386 70.58 702 708 165.5
D 12 218 608486 3509.63 706 686 173.2
D 1 52 69833 399.28 706 686 173.2
D 13 232 34538 195.47 706 686 173.2

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