ASTROSAT CZTI

Data Quality Report

Orbit 37776

Creation date: 2024-06-27T21:44:17.211798
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/AS1A11_106T02_9000005344_37776cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37776cztM0_level2_quad_clean.evt
Size (bytes)380,799,36070,787,520
Size363.2 MB 67.5 MB
Events in quadrant A2,804,090438,817
Events in quadrant B2,752,144443,746
Events in quadrant C2,671,784445,919
Events in quadrant D2,926,871426,803

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118022
B0119711
C0114241
D0127061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5543320.577305%
B5543260.469060%
C554390.162367%
D5543741.335017%

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 7157 5544 21 21 0.29% 0.38%
B 7157 5544 16 16 0.22% 0.29%
C 7157 5544 9 9 0.13% 0.16%
D 7157 5544 67 67 0.94% 1.21%

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 299014 2453.68 606 595 121.6
A 9 143 71383 582.04 606 595 121.6
A 15 222 62247 506.92 606 595 121.6
B 0 189 145388 1259.02 600 584 115.0
B 5 255 96522 834.15 600 584 115.0
B 0 229 64817 558.48 600 584 115.0
C 15 214 255575 1856.21 588 591 137.4
C 0 10 43663 313.55 588 591 137.4
C 0 207 36420 260.82 588 591 137.4
D 2 249 115467 793.2 588 570 144.9
D 13 249 106380 730.47 588 570 144.9
D 10 199 87399 599.43 588 570 144.9

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