ASTROSAT CZTI

Data Quality Report

Orbit 45995

Creation date: 2024-06-27T23:18:33.251471
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/AS1A13_017T01_9000006148_45995cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45995cztM0_level2_quad_clean.evt
Size (bytes)508,259,520109,656,000
Size484.7 MB 104.6 MB
Events in quadrant A5,631,525728,060
Events in quadrant B4,593,811763,591
Events in quadrant C2,842,432754,031
Events in quadrant D5,256,241633,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210162
B0179482
C0129742
D0199882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63211903.005854%
B63212614.129093%
C6321100.158203%
D63225688.984499%

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 7561 6322 53 53 0.70% 0.84%
B 7561 6321 114 114 1.51% 1.80%
C 7561 6321 0 0 0.00% 0.00%
D 7562 6323 581 581 7.68% 9.19%

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 10 83 2832353 19102.01 717 703 148.2
A 15 223 31542 208.04 717 703 148.2
A 13 254 8567 53.05 717 703 148.2
B 3 112 1596301 11357.25 723 701 140.5
B 5 255 71345 502.83 723 701 140.5
B 12 16 53554 376.2 723 701 140.5
C 12 2 8661 46.67 726 731 169.9
C 3 233 6326 32.93 726 731 169.9
C 13 61 4746 23.63 726 731 169.9
D 12 2 1824050 10574.62 687 665 172.4
D 1 52 595618 3450.4 687 665 172.4
D 13 249 90277 519.7 687 665 172.4

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