ASTROSAT CZTI

Data Quality Report

Orbit 38616

Creation date: 2024-06-27T21:54:09.610383
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/AS1A12_052T04_9000005388_38616cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38616cztM0_level2_quad_clean.evt
Size (bytes)753,140,160179,311,680
Size718.3 MB 171.0 MB
Events in quadrant A5,741,3851,227,203
Events in quadrant B6,619,9771,243,227
Events in quadrant C6,265,8201,157,680
Events in quadrant D8,405,8921,045,284

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236534
B0269183
C0253483
D0324823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10915270.247366%
B109152141.960605%
C109153643.334860%
D109156696.129180%

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 15392 10918 13 13 0.08% 0.12%
B 15392 10918 116 116 0.75% 1.06%
C 15392 10918 295 295 1.92% 2.70%
D 15392 10918 619 619 4.02% 5.67%

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 786699 3134.86 1238 1211 250.6
A 13 248 46626 181.25 1238 1211 250.6
A 7 3 40070 155.09 1238 1211 250.6
B 4 171 1015685 4340.59 1228 1196 233.7
B 0 183 331604 1413.68 1228 1196 233.7
B 0 186 93691 395.75 1228 1196 233.7
C 14 254 1081508 3890.99 1191 1199 277.6
C 15 214 439266 1577.8 1191 1199 277.6
C 15 159 43703 153.09 1191 1199 277.6
D 1 47 1412144 4920.92 1176 1143 286.7
D 2 249 726459 2529.57 1176 1143 286.7
D 2 16 424062 1474.95 1176 1143 286.7

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