ASTROSAT CZTI

Data Quality Report

Orbit 36600

Creation date: 2024-06-27T21:28:59.923951
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_097T24_9000005224_36600cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36600cztM0_level2_quad_clean.evt
Size (bytes)466,297,92088,122,240
Size444.7 MB 84.0 MB
Events in quadrant A3,140,790573,613
Events in quadrant B3,212,500574,928
Events in quadrant C3,474,228546,839
Events in quadrant D3,867,942535,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132823
B0134232
C0140092
D0158862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275130.207171%
B6275150.239044%
C62751652.629482%
D62751442.294821%

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 8900 6277 2 2 0.02% 0.03%
B 8900 6277 2 2 0.02% 0.03%
C 8900 6277 121 121 1.36% 1.93%
D 8900 6276 91 91 1.02% 1.45%

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 219453 1472.31 733 719 148.6
A 15 223 49059 325.38 733 719 148.6
A 9 143 18503 119.71 733 719 148.6
B 0 213 154990 1093.93 726 707 141.0
B 0 190 62276 436.55 726 707 141.0
B 4 171 41563 289.69 726 707 141.0
C 0 10 345473 2107.84 698 702 163.6
C 15 214 264862 1615.01 698 702 163.6
C 0 207 75572 457.74 698 702 163.6
D 12 235 394155 2283.62 704 685 172.3
D 13 171 171871 993.53 704 685 172.3
D 10 199 110063 634.81 704 685 172.3

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