ASTROSAT CZTI

Data Quality Report

Orbit 33760

Creation date: 2024-06-27T20:52:21.842990
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_086T01_9000004820_33760cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33760cztM0_level2_quad_clean.evt
Size (bytes)582,344,64078,626,880
Size555.4 MB 75.0 MB
Events in quadrant A5,832,606468,297
Events in quadrant B3,580,650507,754
Events in quadrant C3,411,291509,977
Events in quadrant D4,410,350480,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214383
B0145522
C0138572
D0173042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5921123420.841074%
B59211953.293363%
C59211222.060463%
D59211412.381355%

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 9386 5922 1007 1007 10.73% 17.00%
B 9386 5922 144 144 1.53% 2.43%
C 9387 5923 88 88 0.94% 1.49%
D 9387 5923 132 132 1.41% 2.23%

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 15 169 2970622 23767.06 614 599 125.0
A 15 237 422532 3376.44 614 599 125.0
A 7 16 39204 308.93 614 599 125.0
B 5 172 379784 2906.71 683 665 130.4
B 5 200 128033 976.53 683 665 130.4
B 0 229 109938 837.8 683 665 130.4
C 9 187 343013 2221.18 670 674 154.1
C 15 214 258650 1673.81 670 674 154.1
C 0 10 113346 731.04 670 674 154.1
D 8 195 967852 5876.3 670 652 164.6
D 2 250 232703 1409.84 670 652 164.6
D 1 47 211311 1279.87 670 652 164.6

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