ASTROSAT CZTI

Data Quality Report

Orbit 20170429_A03_102T01_9000001202_level2

Creation date: 2026-03-11T11:12:07.436380
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/AS1A03_102T01_9000001202cztM0_level2.fits modeM0/AS1A03_102T01_9000001202cztM0_level2_quad_clean.evt
Size (bytes)1,492,214,4001,974,686,400
Size1.4 GB 1.8 GB
Events in quadrant A8,812,11212,481,616
Events in quadrant B8,627,23612,770,402
Events in quadrant C8,823,10812,126,252
Events in quadrant D7,552,72411,060,509

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02470
B02470
C02470
D02480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033840
B033820
C033840
D033800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03530640
B03637770
C03380810
D03703340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16602429161.756373%
B16602131121.874462%
C16603113000.782986%
D16602637122.235794%

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 194879 166029 0 0 0.00% 0.00%
B 194879 166014 0 0 0.00% 0.00%
C 194879 166041 0 0 0.00% 0.00%
D 194879 165962 0 0 0.00% 0.00%

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 0 29 8862 11.66 2294 2145 576.1
A 7 110 7376 9.08 2294 2145 576.1
A 0 30 6770 8.03 2294 2145 576.1
B 2 9 7642 12.4 2279 2171 441.1
B 14 254 5931 8.52 2279 2171 441.1
B 3 17 5852 8.34 2279 2171 441.1
C 1 80 6573 7.35 2326 2161 600.0
C 1 81 6477 7.19 2326 2161 600.0
C 12 241 6245 6.81 2326 2161 600.0
D 3 14 5673 6.42 2150 1945 581.1
D 6 231 5556 6.21 2150 1945 581.1
D 7 5 5371 5.9 2150 1945 581.1

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