ASTROSAT CZTI

Data Quality Report

Orbit 20696

Creation date: 2024-06-27T18:18:30.345696
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/AS1A05_165T07_9000003062_20696cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20696cztM0_level2_quad_clean.evt
Size (bytes)118,535,04026,046,720
Size113.0 MB 24.8 MB
Events in quadrant A861,285176,630
Events in quadrant B857,124178,114
Events in quadrant C862,195166,228
Events in quadrant D911,886163,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035491
B035261
C035752
D036981

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1394443.156385%
B1394463.299857%
C1393694.953338%
D1393473.374013%

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 2584 1395 0 0 0.00% 0.00%
B 2584 1395 0 0 0.00% 0.00%
C 2583 1394 0 0 0.00% 0.00%
D 2583 1394 5 5 0.19% 0.36%

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 0 226 2016 38.78 224 219 46.3
A 12 194 1657 31.03 224 219 46.3
A 3 137 1635 30.56 224 219 46.3
B 12 111 4648 104.5 217 212 42.5
B 11 111 4429 99.34 217 212 42.5
B 0 189 4012 89.51 217 212 42.5
C 14 238 33548 663.78 211 212 50.2
C 7 247 3902 73.48 211 212 50.2
C 13 61 1496 25.57 211 212 50.2
D 5 222 44586 835.0 218 212 53.1
D 7 238 27284 509.43 218 212 53.1
D 1 52 7092 129.46 218 212 53.1

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