ASTROSAT CZTI

Data Quality Report

Orbit 41850

Creation date: 2024-06-27T22:33:34.819022
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_099T04_9000005708_41850cztM0_level2.fits modeM0/AS1A12_099T04_9000005708_41850cztM0_level2_quad_clean.evt
Size (bytes)473,834,88086,719,680
Size451.9 MB 82.7 MB
Events in quadrant A3,850,179618,364
Events in quadrant B2,626,847650,349
Events in quadrant C3,284,275580,167
Events in quadrant D7,386,447423,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146852
B0110422
C0125372
D0253972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50471943.843868%
B5047340.673668%
C50472865.666733%
D5047150629.839509%

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 7048 5048 145 145 2.06% 2.87%
B 7048 5048 29 29 0.41% 0.57%
C 7048 5048 277 277 3.93% 5.49%
D 7048 5048 1590 1590 22.56% 31.50%

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 14 24 883120 7432.49 583 572 118.7
A 10 83 519706 4371.95 583 572 118.7
A 2 79 188000 1578.45 583 572 118.7
B 5 255 195066 1755.73 585 570 110.8
B 0 183 111812 1004.19 585 570 110.8
B 12 111 13468 116.43 585 570 110.8
C 0 10 910905 7189.1 552 556 126.6
C 15 214 197636 1556.36 552 556 126.6
C 0 207 21171 162.8 552 556 126.6
D 12 79 4768412 38036.97 513 499 125.3
D 10 34 157964 1256.21 513 499 125.3
D 12 6 140662 1118.18 513 499 125.3

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