ASTROSAT CZTI

Data Quality Report

Orbit 37244

Creation date: 2024-06-27T21:37:21.973170
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/AS1A10_123T11_9000005286_37244cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37244cztM0_level2_quad_clean.evt
Size (bytes)188,602,56039,945,600
Size179.9 MB 38.1 MB
Events in quadrant A1,558,836263,207
Events in quadrant B1,198,097277,873
Events in quadrant C1,211,359265,849
Events in quadrant D1,604,777256,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057646
B048425
C047605
D0622223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201423211.519364%
B201360.298063%
C2014301.489573%
D2010713.532338%

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 2016 2016 181 181 8.98% 8.98%
B 2013 2013 4 4 0.20% 0.20%
C 2016 2016 26 26 1.29% 1.29%
D 2015 2014 64 64 3.18% 3.18%

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 15 237 546150 11330.48 232 228 48.2
A 10 83 62926 1301.27 232 228 48.2
A 13 248 33109 682.43 232 228 48.2
B 0 230 104629 2208.8 241 236 47.3
B 0 213 35036 736.32 241 236 47.3
B 0 155 33482 703.44 241 236 47.3
C 14 254 136627 2445.66 235 236 55.8
C 15 214 81602 1458.99 235 236 55.8
C 1 23 37381 666.06 235 236 55.8
D 2 249 280226 4832.81 235 229 57.9
D 12 235 102194 1759.94 235 229 57.9
D 1 52 97355 1676.42 235 229 57.9

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