ASTROSAT CZTI

Data Quality Report

Orbit 00712

Creation date: 2024-06-27T14:01:53.852280
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/AS1P01_141T01_9000000104_00712cztM0_level2.evt modeM0/AS1P01_141T01_9000000104_00712cztM0_level2_quad_clean.evt
Size (bytes)1,146,968,64076,786,560
Size1.1 GB 73.2 MB
Events in quadrant A7,926,009469,277
Events in quadrant B9,287,804473,176
Events in quadrant C8,855,306465,153
Events in quadrant D8,218,288444,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284251
B0323951
C0311431
D0292311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678480.117925%
B6784120.176887%
C6784130.191627%
D6784781.149764%

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 7689 6785 179 179 2.33% 2.64%
B 7689 6785 483 483 6.28% 7.12%
C 7689 6785 297 297 3.86% 4.38%
D 7689 6785 457 457 5.94% 6.74%

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 11 79 6813 9.51 2065 2082 497.6
A 3 111 6290 8.46 2065 2082 497.6
A 15 69 5342 6.55 2065 2082 497.6
B 5 247 960605 1927.35 2109 2120 497.3
B 0 220 78372 153.33 2109 2120 497.3
B 14 50 63639 123.7 2109 2120 497.3
C 3 31 303211 565.3 1906 1978 532.9
C 3 15 263716 491.18 1906 1978 532.9
C 3 175 255154 475.11 1906 1978 532.9
D 0 25 243055 417.47 1864 1931 577.6
D 11 131 225329 386.78 1864 1931 577.6
D 7 207 152876 261.34 1864 1931 577.6

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