ASTROSAT CZTI

Data Quality Report

Orbit 07437

Creation date: 2024-06-27T15:19:44.622266
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/AS1A02_108T01_9000001024_07437cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07437cztM0_level2_quad_clean.evt
Size (bytes)1,624,898,880240,791,040
Size1.5 GB 229.6 MB
Events in quadrant A10,441,7631,453,835
Events in quadrant B10,702,2691,477,179
Events in quadrant C14,320,6411,433,470
Events in quadrant D12,234,5381,387,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0461246
B0466125
C0577515
D0518065

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223782721.215479%
B223782601.161855%
C223783181.421039%
D223786462.886764%

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 27776 22382 1 1 0.00% 0.00%
B 27776 22382 6 6 0.02% 0.03%
C 27776 22383 16 16 0.06% 0.07%
D 27776 22381 330 330 1.19% 1.47%

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 15 239 145022 265.86 2655 2590 535.7
A 15 234 54420 96.74 2655 2590 535.7
A 0 226 25460 42.69 2655 2590 535.7
B 0 214 206166 403.59 2668 2602 504.4
B 4 81 89550 172.39 2668 2602 504.4
B 12 111 52170 98.28 2668 2602 504.4
C 9 68 4205967 7112.4 2578 2594 591.0
C 1 16 21929 32.72 2578 2594 591.0
C 13 61 19993 29.44 2578 2594 591.0
D 15 47 832618 1330.81 2569 2487 623.8
D 13 105 461258 735.47 2569 2487 623.8
D 2 14 397528 633.3 2569 2487 623.8

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