ASTROSAT CZTI

Data Quality Report

Orbit 50708

Creation date: 2025-02-11T21:06:17.644600
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/AS1C09_003T01_9000006448_50708cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50708cztM0_level2_quad_clean.evt
Size (bytes)630,106,56083,966,400
Size600.9 MB 80.1 MB
Events in quadrant A3,440,717594,407
Events in quadrant B3,651,882639,828
Events in quadrant C9,619,834396,243
Events in quadrant D6,124,222472,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143001
B0152881
C0329341
D0225231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62871282.035947%
B62882023.212468%
C6288238837.977099%
D628894715.060433%

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 7242 6288 69 69 0.95% 1.10%
B 7243 6289 105 105 1.45% 1.67%
C 7243 6287 1864 1864 25.74% 29.65%
D 7243 6289 826 826 11.40% 13.13%

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 4 3 204337 1228.59 667 651 165.8
A 8 38 126016 756.17 667 651 165.8
A 8 249 76076 454.95 667 651 165.8
B 5 185 175697 1247.05 658 635 140.4
B 8 128 164192 1165.1 658 635 140.4
B 0 229 123352 874.17 658 635 140.4
C 0 193 2924361 19507.11 536 531 149.9
C 5 10 2180039 14541.17 536 531 149.9
C 13 3 780085 5201.0 536 531 149.9
D 8 176 2052146 12231.11 602 580 167.7
D 10 98 700273 4171.46 602 580 167.7
D 2 249 292454 1740.11 602 580 167.7

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