ASTROSAT CZTI

Data Quality Report

Orbit 34902

Creation date: 2022-03-13T09:12:19.206487
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/AS1A11_065T05_9000004998_34902cztM0_level2.evt modeM0/AS1A11_065T05_9000004998_34902cztM0_level2_quad_clean.evt
Size (bytes)168,609,60031,443,840
Size160.8 MB 30.0 MB
Events in quadrant A881,891214,381
Events in quadrant B1,196,226213,423
Events in quadrant C1,060,188210,543
Events in quadrant D1,848,559186,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036552
B046861
C041571
D066911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172090.523256%
B1720925.348837%
C1720523.023256%
D172028816.744186%

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 3784 1721 6 6 0.16% 0.35%
B 3784 1721 60 60 1.59% 3.49%
C 3784 1721 42 42 1.11% 2.44%
D 3784 1721 242 242 6.40% 14.06%

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 10 83 27274 608.26 212 207 44.5
A 15 237 17699 393.09 212 207 44.5
A 9 143 5800 125.69 212 207 44.5
B 0 190 191151 4621.92 207 203 41.3
B 5 172 87880 2122.23 207 203 41.3
B 5 255 22958 550.79 207 203 41.3
C 0 10 127468 2596.54 205 207 49.0
C 15 214 79400 1615.79 205 207 49.0
C 14 67 16568 333.82 205 207 49.0
D 12 233 558368 11506.82 193 188 48.5
D 8 195 257909 5312.89 193 188 48.5
D 2 250 78415 1612.64 193 188 48.5

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