ASTROSAT CZTI

Data Quality Report

Orbit 31214

Creation date: 2024-06-27T20:25:07.290514
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/AS1T04_019T01_9000004516_31214cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31214cztM0_level2_quad_clean.evt
Size (bytes)674,821,440113,244,480
Size643.6 MB 108.0 MB
Events in quadrant A3,815,894740,158
Events in quadrant B6,196,607733,057
Events in quadrant C4,296,074705,423
Events in quadrant D5,599,732707,020

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165374
B0240874
C0178494
D0222334

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78131682.150262%
B78143975.080625%
C78143794.850269%
D78141802.303558%

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 8313 7817 0 0 0.00% 0.00%
B 8314 7818 2 2 0.02% 0.03%
C 8314 7818 31 31 0.37% 0.40%
D 8314 7818 6 6 0.07% 0.08%

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 13 254 12932 59.03 989 969 202.6
A 3 137 10735 48.19 989 969 202.6
A 0 226 8169 35.53 989 969 202.6
B 6 159 2322943 12127.35 969 943 191.5
B 0 190 40571 206.97 969 943 191.5
B 12 111 24633 123.73 969 943 191.5
C 10 22 182264 801.75 948 954 226.1
C 14 238 149938 658.8 948 954 226.1
C 3 233 128872 565.65 948 954 226.1
D 8 195 1903494 8322.39 961 940 228.6
D 2 72 35187 149.81 961 940 228.6
D 2 234 29188 123.57 961 940 228.6

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