ASTROSAT CZTI

Data Quality Report

Orbit 14656

Creation date: 2024-06-27T16:58:04.374602
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/AS1G08_019T01_9000002166_14656cztM0_level2.evt modeM0/AS1G08_019T01_9000002166_14656cztM0_level2_quad_clean.evt
Size (bytes)1,442,960,640218,465,280
Size1.3 GB 208.3 MB
Events in quadrant A13,038,3131,349,358
Events in quadrant B8,774,8461,364,019
Events in quadrant C11,595,4061,326,205
Events in quadrant D9,068,0311,326,198

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505865
B0377504
C0470804
D0396454

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181502571.415978%
B181501770.975207%
C181501190.655647%
D181502671.471074%

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 20071 18151 41 41 0.20% 0.23%
B 20071 18151 16 16 0.08% 0.09%
C 20071 18153 1 1 0.00% 0.01%
D 20071 18152 143 143 0.71% 0.79%

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 0 253 2935065 6749.87 2148 2098 434.5
A 0 23 1434260 3295.95 2148 2098 434.5
A 1 162 125193 283.29 2148 2098 434.5
B 4 173 76397 181.38 2144 2088 409.7
B 0 197 50957 119.28 2144 2088 409.7
B 12 111 49634 116.05 2144 2088 409.7
C 3 233 3449537 7233.72 2070 2078 476.6
C 9 54 40767 81.18 2070 2078 476.6
C 3 234 25746 49.66 2070 2078 476.6
D 13 122 465411 919.43 2077 2025 504.0
D 5 222 205138 403.01 2077 2025 504.0
D 10 199 171942 337.14 2077 2025 504.0

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