ASTROSAT CZTI

Data Quality Report

Orbit 41331

Creation date: 2024-06-27T22:27:41.574178
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_9000005652_41331cztM0_level2.fits modeM0/AS1A12_037T01_9000005652_41331cztM0_level2_quad_clean.evt
Size (bytes)351,109,44087,148,800
Size334.8 MB 83.1 MB
Events in quadrant A2,802,246596,951
Events in quadrant B2,484,252620,210
Events in quadrant C3,225,298547,493
Events in quadrant D4,084,821514,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112193
B0106332
C0124222
D0156302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A514290.175029%
B514290.175029%
C51422785.406457%
D51422284.434072%

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 7294 5143 4 4 0.05% 0.08%
B 7294 5143 1 1 0.01% 0.02%
C 7294 5143 275 275 3.77% 5.35%
D 7294 5143 232 232 3.18% 4.51%

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 493219 4060.73 593 583 121.3
A 2 79 15268 121.05 593 583 121.3
A 3 137 6542 49.12 593 583 121.3
B 5 255 72433 637.32 588 573 112.8
B 0 190 69205 608.69 588 573 112.8
B 12 111 14843 126.56 588 573 112.8
C 0 10 840096 6512.53 551 555 128.9
C 15 214 215305 1665.87 551 555 128.9
C 9 54 22898 173.32 551 555 128.9
D 1 52 1280888 9179.32 563 547 139.5
D 5 222 222558 1591.69 563 547 139.5
D 13 249 172477 1232.64 563 547 139.5

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