ASTROSAT CZTI

Data Quality Report

Orbit 41165

Creation date: 2024-06-27T22:25:16.711819
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/AS1A12_037T01_9000005608_41165cztM0_level2.fits modeM0/AS1A12_037T01_9000005608_41165cztM0_level2_quad_clean.evt
Size (bytes)948,038,400246,188,160
Size904.1 MB 234.8 MB
Events in quadrant A7,980,8551,648,015
Events in quadrant B7,447,5671,683,969
Events in quadrant C8,322,8831,574,402
Events in quadrant D10,151,1921,487,038

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332114
B0330644
C0349574
D0411884

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15377370.240619%
B15377960.624309%
C153773282.133056%
D153771731.125057%

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 19555 15380 11 11 0.06% 0.07%
B 19555 15380 59 59 0.30% 0.38%
C 19555 15380 253 253 1.29% 1.64%
D 19555 15380 160 160 0.82% 1.04%

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 10 83 1281800 3712.46 1688 1654 344.8
A 7 3 136756 391.8 1688 1654 344.8
A 13 254 27127 73.87 1688 1654 344.8
B 0 245 424402 1305.53 1668 1620 323.8
B 5 255 283995 871.96 1668 1620 323.8
B 0 229 109367 332.72 1668 1620 323.8
C 9 54 850795 2234.1 1627 1639 380.1
C 15 214 650332 1706.69 1627 1639 380.1
C 0 10 308858 808.28 1627 1639 380.1
D 2 16 2998063 7567.82 1628 1585 395.9
D 13 249 683970 1723.41 1628 1585 395.9
D 2 249 101668 252.77 1628 1585 395.9

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