ASTROSAT CZTI

Data Quality Report

Orbit 30400

Creation date: 2024-06-27T20:14:45.664511
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/AS1A10_053T20_9000004372_30400cztM0_level2.evt modeM0/AS1A10_053T20_9000004372_30400cztM0_level2_quad_clean.evt
Size (bytes)346,250,88068,342,400
Size330.2 MB 65.2 MB
Events in quadrant A2,089,682449,242
Events in quadrant B3,474,022453,397
Events in quadrant C2,177,321433,262
Events in quadrant D2,450,060428,499

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089021
B0131961
C090101
D0102081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4337170.391976%
B4337400.922297%
C4337370.853124%
D43371633.758358%

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 4337 4337 1 1 0.02% 0.02%
B 4337 4337 13 13 0.30% 0.30%
C 4337 4337 1 1 0.02% 0.02%
D 4337 4337 128 128 2.95% 2.95%

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 8 192 13783 123.44 536 527 107.4
A 13 254 8537 74.59 536 527 107.4
A 3 137 5071 42.31 536 527 107.4
B 6 159 1306580 12934.76 532 518 101.0
B 5 172 59332 582.47 532 518 101.0
B 0 229 21582 208.61 532 518 101.0
C 14 238 91019 740.17 520 523 122.3
C 10 22 25235 202.12 520 523 122.3
C 3 233 16718 132.46 520 523 122.3
D 13 104 453140 3710.43 514 502 122.0
D 8 195 22823 182.97 514 502 122.0
D 2 250 17747 141.36 514 502 122.0

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