ASTROSAT CZTI

Data Quality Report

Orbit 10875

Creation date: 2024-06-27T16:05:03.722256
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/AS1A04_130T01_9000001572_10875cztM0_level2.evt modeM0/AS1A04_130T01_9000001572_10875cztM0_level2_quad_clean.evt
Size (bytes)1,362,424,320162,184,320
Size1.3 GB 154.7 MB
Events in quadrant A9,721,6611,012,770
Events in quadrant B9,450,6211,035,275
Events in quadrant C6,240,1621,052,975
Events in quadrant D14,920,076858,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02842
C02840
D02840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038493200
B037817199
C028587101
D054703879

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137689116.616793%
B1376611218.143251%
C13788910.659994%
D13702342224.974456%

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 14966 13835 539 539 3.60% 3.90%
B 14966 13835 491 491 3.28% 3.55%
C 14966 13839 0 0 0.00% 0.00%
D 14966 13776 3085 3085 20.61% 22.39%

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 2450680 7541.81 1594 1559 324.7
A 15 223 634736 1949.8 1594 1559 324.7
A 15 239 216914 663.16 1594 1559 324.7
B 4 239 3062769 9867.18 1609 1567 310.2
B 0 214 38997 120.65 1609 1567 310.2
B 12 111 34644 106.62 1609 1567 310.2
C 13 61 11843 27.46 1597 1605 372.8
C 14 234 11406 26.29 1597 1605 372.8
C 12 4 4719 8.35 1597 1605 372.8
D 1 52 8973405 26936.84 1362 1323 333.1
D 8 195 286555 856.35 1362 1323 333.1
D 9 85 158890 473.06 1362 1323 333.1

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