ASTROSAT CZTI

Data Quality Report

Orbit 50299

Creation date: 2025-01-15T15:11:35.093437
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_9000006442_50299cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50299cztM0_level2_quad_clean.evt
Size (bytes)2,317,440,960109,926,720
Size2.2 GB 104.8 MB
Events in quadrant A17,930,760928,915
Events in quadrant B12,626,6891,141,095
Events in quadrant C24,445,43998,136
Events in quadrant D29,763,860244,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0625824
B0466598
C0817094
D0974384

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13221344826.079722%
B13221209715.861130%
C132211225792.708570%
D132211067380.727630%

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 14776 13225 3136 3136 21.22% 23.71%
B 14776 13225 1338 1338 9.06% 10.12%
C 14776 13222 5283 5283 35.75% 39.96%
D 14776 13225 9845 9845 66.63% 74.44%

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 6 250 7306575 23207.91 1275 1245 314.8
A 0 98 1775826 5637.57 1275 1245 314.8
A 3 63 1292420 4101.86 1275 1245 314.8
B 4 206 4963615 17537.01 1336 1290 283.0
B 5 172 694437 2449.6 1336 1290 283.0
B 5 185 302385 1064.08 1336 1290 283.0
C 15 197 12815192 133636.8 326 322 95.9
C 4 111 8346965 87040.96 326 322 95.9
C 1 60 371058 3866.13 326 322 95.9
D 7 61 19533393 91761.22 685 653 212.9
D 15 108 1878120 8819.99 685 653 212.9
D 12 6 1124988 5281.92 685 653 212.9

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