ASTROSAT CZTI

Data Quality Report

Orbit 20160319_T01_071T01_9000000382_level2

Creation date: 2025-10-28T19:04:39.841816
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/AS1T01_071T01_9000000382cztM0_level2.fits modeM0/AS1T01_071T01_9000000382cztM0_level2_quad_clean.evt
Size (bytes)1,516,406,4001,595,718,720
Size1.4 GB 1.5 GB
Events in quadrant A9,011,5849,457,537
Events in quadrant B8,788,5749,578,676
Events in quadrant C8,898,8269,207,728
Events in quadrant D7,521,9148,384,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02190
B02190
C02190
D02190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03531420
B03569710
C03605960
D03978880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034720
B034720
C034720
D034720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17080624201.416812%
B17080625111.470089%
C17080623971.403346%
D17080635342.069014%

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 192587 170809 0 0 0.00% 0.00%
B 192587 170807 0 0 0.00% 0.00%
C 192587 170802 0 0 0.00% 0.00%
D 192587 170800 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 8484 10.34 2340 2171 610.3
A 7 110 7903 9.39 2340 2171 610.3
A 14 79 6680 7.39 2340 2171 610.3
B 2 9 7861 12.44 2321 2198 455.4
B 12 226 6674 9.83 2321 2198 455.4
B 14 254 6330 9.07 2321 2198 455.4
C 2 127 6067 6.16 2355 2162 633.8
C 9 188 5923 5.93 2355 2162 633.8
C 9 242 5906 5.91 2355 2162 633.8
D 3 14 5665 6.21 2152 1943 599.0
D 11 82 5590 6.09 2152 1943 599.0
D 6 231 5561 6.04 2152 1943 599.0

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