ASTROSAT CZTI

Data Quality Report

Orbit 20170807_A03_008T01_9000001442_level2

Creation date: 2017-10-18T09:01:14.724450
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A03_008T01_9000001442cztM0_level2.evt modeM0/AS1A03_008T01_9000001442cztM0_level2_quad_clean.evt
Size (bytes)1,718,326,080316,840,320
Size1.6 GB 302.2 MB
Events in quadrant A12,409,0571,957,247
Events in quadrant B12,426,2711,991,258
Events in quadrant C11,947,3381,938,374
Events in quadrant D13,446,3881,868,299

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0553140
B0551860
C0547890
D0591290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05460
B05460
C05460
D05460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267642330.870572%
B267642931.094754%
C267641120.418473%
D267643531.318936%

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 28345 26766 19 19 0.07% 0.07%
B 28345 26766 17 17 0.06% 0.06%
C 28345 26767 14 14 0.05% 0.05%
D 28345 26767 206 206 0.73% 0.77%

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 8 5 349967 552.36 3090 3017 628.1
A 0 8 76851 117.55 3090 3017 628.1
A 15 239 62406 94.55 3090 3017 628.1
B 0 214 232493 385.91 3107 3029 594.6
B 12 111 67850 109.02 3107 3029 594.6
B 4 239 62051 99.26 3107 3029 594.6
C 7 247 91077 127.25 3007 3018 692.0
C 14 234 62028 85.27 3007 3018 692.0
C 14 67 37840 50.32 3007 3018 692.0
D 1 52 708281 929.52 2975 2902 758.9
D 2 16 437077 572.14 2975 2902 758.9
D 10 199 221088 287.51 2975 2902 758.9

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