ASTROSAT CZTI

Data Quality Report

Orbit 31524

Creation date: 2024-06-27T20:29:29.287609
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_053T21_9000004592_31524cztM0_level2.evt modeM0/AS1A10_053T21_9000004592_31524cztM0_level2_quad_clean.evt
Size (bytes)566,663,04079,476,480
Size540.4 MB 75.8 MB
Events in quadrant A3,292,880502,080
Events in quadrant B5,020,023499,209
Events in quadrant C3,416,970488,646
Events in quadrant D5,006,670478,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139422
B0195082
C0139252
D0192672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62832173.453764%
B62832463.915327%
C62832193.485596%
D62832774.408722%

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 7183 6283 41 41 0.57% 0.65%
B 7183 6283 4 4 0.06% 0.06%
C 7183 6283 18 18 0.25% 0.29%
D 7183 6283 122 122 1.70% 1.94%

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 13 285290 1791.86 779 761 158.8
A 13 254 12044 71.06 779 761 158.8
A 3 137 8354 47.82 779 761 158.8
B 6 159 1711059 11339.92 763 741 150.8
B 4 80 206369 1363.37 763 741 150.8
B 0 190 25434 163.72 763 741 150.8
C 3 233 168679 941.85 747 748 178.3
C 14 238 118924 662.8 747 748 178.3
C 0 10 108629 605.06 747 748 178.3
D 8 195 1508854 8304.76 754 733 181.6
D 13 249 241980 1328.47 754 733 181.6
D 12 79 197736 1084.83 754 733 181.6

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