ASTROSAT CZTI

Data Quality Report

Orbit 31266

Creation date: 2024-06-27T20:25:57.316611
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/AS1T04_021T01_9000004526_31266cztM0_level2.evt modeM0/AS1T04_021T01_9000004526_31266cztM0_level2_quad_clean.evt
Size (bytes)594,316,800107,403,840
Size566.8 MB 102.4 MB
Events in quadrant A3,543,806723,719
Events in quadrant B5,374,108713,236
Events in quadrant C4,231,338693,421
Events in quadrant D4,426,685685,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145662
B0200832
C0170092
D0175074

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521091.743442%
B62522183.486884%
C62523455.518234%
D62511652.639578%

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 7552 6253 0 0 0.00% 0.00%
B 7552 6253 11 11 0.15% 0.18%
C 7552 6253 53 53 0.70% 0.85%
D 7551 6252 49 49 0.65% 0.78%

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 13 254 11106 56.85 919 907 179.4
A 3 137 8192 40.61 919 907 179.4
A 0 226 7754 38.17 919 907 179.4
B 6 159 1668431 10164.09 894 876 164.1
B 4 80 61554 369.84 894 876 164.1
B 0 190 40741 242.99 894 876 164.1
C 3 233 440290 2257.67 859 868 194.6
C 0 10 228276 1168.38 859 868 194.6
C 14 238 147848 755.16 859 868 194.6
D 8 195 855178 3824.11 884 868 223.4
D 2 250 96378 427.53 884 868 223.4
D 12 233 94686 419.95 884 868 223.4

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