ASTROSAT CZTI

Data Quality Report

Orbit 26530

Creation date: 2024-06-27T19:30:05.826434
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/AS1C05_019T04_9000003838_26530cztM0_level2.evt modeM0/AS1C05_019T04_9000003838_26530cztM0_level2_quad_clean.evt
Size (bytes)538,873,920117,671,040
Size513.9 MB 112.2 MB
Events in quadrant A3,029,645821,256
Events in quadrant B3,318,930814,332
Events in quadrant C3,330,263775,553
Events in quadrant D6,237,521736,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128270
B0136260
C0136600
D0227130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5954450.755794%
B59541041.746725%
C5954841.410816%
D595472212.126302%

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 7144 5954 0 0 0.00% 0.00%
B 7144 5954 43 43 0.60% 0.72%
C 7144 5955 2 2 0.03% 0.03%
D 7144 5954 598 598 8.37% 10.04%

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 5 168 61687 400.05 768 754 152.3
A 13 254 10277 62.52 768 754 152.3
A 0 226 6879 40.21 768 754 152.3
B 5 172 177390 1283.78 751 733 137.6
B 3 112 72651 522.63 751 733 137.6
B 3 64 67689 486.57 751 733 137.6
C 3 233 357683 2135.04 726 733 167.2
C 14 238 116603 693.06 726 733 167.2
C 4 254 21833 126.21 726 733 167.2
D 7 80 1970111 11384.28 714 697 173.0
D 1 52 1074219 6205.54 714 697 173.0
D 12 233 261812 1509.39 714 697 173.0

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