ASTROSAT CZTI

Data Quality Report

Orbit 00856

Creation date: 2024-06-27T14:03:52.740767
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_165T02_9000000120_00856cztM0_level2.evt modeM0/AS1P01_165T02_9000000120_00856cztM0_level2_quad_clean.evt
Size (bytes)1,103,630,40081,544,320
Size1.0 GB 77.8 MB
Events in quadrant A8,193,833505,824
Events in quadrant B8,914,334500,461
Events in quadrant C8,103,838494,945
Events in quadrant D7,755,494488,684

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292010
B0313840
C0289860
D0280230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6878200.290782%
B6879711.032127%
C6879260.377962%
D6879660.959442%

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 8903 6880 306 306 3.44% 4.45%
B 8904 6880 503 503 5.65% 7.31%
C 8904 6881 329 329 3.69% 4.78%
D 8904 6881 351 351 3.94% 5.10%

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 14 79 43597 80.35 2122 2140 516.0
A 12 243 9533 14.33 2122 2140 516.0
A 11 79 9060 13.41 2122 2140 516.0
B 0 220 145524 271.27 2247 2260 528.1
B 0 184 76334 140.26 2247 2260 528.1
B 4 222 30275 53.05 2247 2260 528.1
C 9 83 57847 97.54 2042 2116 571.3
C 3 111 23607 37.61 2042 2116 571.3
C 15 241 20592 32.34 2042 2116 571.3
D 2 16 123388 199.87 1957 2025 607.2
D 7 207 109106 176.35 1957 2025 607.2
D 2 63 71761 114.85 1957 2025 607.2

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